wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Predicting Products for Double Replacement Reactions Using Solubility Rules

Total questions: 130

Worksheet time: 8hrs 36mins

Name
Class
Date
1.

When solutions of two ionic compounds are combined and a solid forms, the process is called

a)

hydration

b)

solvation

c)

dissociation

d)

precipitation

2.

Which of the following pairs of solutions produces a precipitate when combined?

a)

Cu(NO3)2 and NaCl

b)

Fe(NO3)3 and MgCl2

c)

Cu(NO3)2 and K2CO3

d)

CaCl2 and NaNO3

3.

When solutions of MgCO3 and Fe2(SO4)3 are combined, what precipitate(s) forms?

a)

MgSO4

b)

neither form a precipitate

c)

MgSO4 and Fe2(CO3)3

d)

Fe2(CO3)3

4.

In writing the chemical equation for a precipitation reaction, what abbreviation of the physical state must appear with one of the products?

a)

(s)

b)

(g)

c)

(l)

d)

(w)

5.

Which of the following compounds is INSOLUBLE?

a)

magnesium phosphate

b)

magnesium sulfate

c)

magnesium iodide

d)

magnesium nitrate

e)

none of the above

6.
KBr
a)
Soluble
b)
Insoluble
7.

Zinc Hydroxide

a)

Soluble

b)

Insoluble

8.

Sodium Acetate

a)

soluble

b)

insoluble

9.

In the laboratory, a student mixes aqueous solutions of Nickel Sulfate and Sodium hydoxide. What will the precipitate be?

a)

Ni(OH)2

b)

Na2SO4

c)

SO2

d)

no precipitate will form

10.

Which of these is a balanced double replacement reaction?

a)

Al2O3 (s) + 3 CO2 (g) --> Al2(CO3)3

b)

Ba(OH)2 (s) → BaO (s) + H2O (aq)

c)

2 KF(aq) + Ca(NO3)2 (aq) → CaF2 (s) + 2 KNO3 (aq)

d)

2 AgClO3 (aq) + Cu (s) --> Cu(ClO3)2 (aq) + 2 Ag (s)

11.

Mixing Aqueous Iron (II) Nitrate and Aqueous Sodium Carbonate causes an orange precipitate to form. What is the chemical formula of the precipitate?

a)

Fe(NO3)2 (s)

b)

FeCO3 (s)

c)

NaNO3 (s)

d)

Na2(NO3)2 (s)

12.

Which of the following best describes a precipitate?

a)

solid powder that falls out of solution when a solid and liquid reactant combine

b)

solid powder that falls out of solution when two aqueous reactants combine

c)

solid powder that falls out of solution when aqueous and gaseous reactants combine

13.

Which of the following best describes a precipitate?

a)

an insoluble solid

b)

a soluble solid

c)

a soluble gas

d)

an insoluble liquid

14.

Which type of reaction can be a precipitate reaction?

a)

synthesis reaction

b)

single replacement reaction

c)

double replacement reaction

d)

combustion reaction

15.

AB (aq) + CD (aq) → AD (aq) + CB(s)


Which substance is the precipitate in the reaction above?

a)

AB

b)

CD

c)

AD

d)

CB

16.

According to the solubility rules (chart), compounds containing Ammonium cations, NH4+ are:

a)

Not Soluble

b)

Sometimes Soluble

c)

Always Soluble

d)

Always insoluble

17.

According to the solubility rules (reference chart), compounds containing Hydroxide anions, OH-

a)

are insoluble when combined with ammonium

b)

are always insoluble

c)

are soluble when combined with group 1 elements

d)

are insoluble when they form compounds with Calcium

18.

Use the Solubility Rules to determine if the following compound is soluble in water:


MgCl2

a)

Soluble

b)

Insoluble

19.

Use the Solubility Rules to determine if the following compound is soluble in water:


CaSO4

a)

Soluble

b)

Insoluble

20.

Use the Solubility Rules to determine if the following compound is soluble in water:


(NH4)2CO3

a)

Soluble

b)

Insoluble

21.

Use the Solubility Rules to determine if the following compound is soluble in water:


PbBr2

a)

Soluble

b)

Insoluble

22.

Use the Solubility Rules to determine if the following compound is soluble in water:


HCl

a)

Soluble

b)

Insoluble

23.

Use the Solubility Rules to determine if the following compound is soluble in water:


CaS

a)

Soluble

b)

Insoluble

24.

Use the Solubility Rules to determine if the following compound is soluble in water:


Li2S

a)

Soluble

b)

Insoluble

25.

Use the Solubility Rules to determine if the following compound is soluble in water:


NaNO3

a)

Soluble

b)

Insoluble

26.

CaCl2(aq) + 2 AgNO3(aq) → Ca(NO3)2(aq) + 2 AgCl(s)


Give 2 clues that the reaction above is called a precipitate reaction

a)

It's a double replacement reaction that forms one aqueous and one solid product

b)

It's a single replacement reaction that forms one aqueous and one solid product

c)

It's a double replacement reaction that forms two aqueous products

d)

It's a single replacement reaction that forms two aqueous products

27.

CaCl2(aq) + 2 AgNO3(aq) → Ca(NO3)2(aq) + 2 AgCl(s)


Which product above is the precipitate?

a)

CaCl2(aq)

b)

AgNO3(aq)

c)

Ca(NO3)2(aq)

d)

AgCl(s)

28.

Predict the Product of the double-replacement (precipitate) reaction.

If there is no reaction, type NR

MgCl2(aq) + NaOH(aq)

(a)  

29.

Predict the Product of the double-replacement (precipitate) reaction. PB has a +2 charge in this reaction. If there is no reaction, type NR

Pb(NO3)2(aq) + MgCl2(aq) →

(a)  

30.

Predict the Products of the double-replacement (precipitate) reactions


K3PO4(aq) + AlCl3(aq) →

(a)  

31.

Predict the precipitate when you mix silver nitrate and sodium chloride. Silver has a +1 charge in this reaction. If there is no reaction, type NR

(a)  

32.

When you mix barium nitrate and sodium sulfate, what will the product be?

If there is no reaction, type NR

(a)  

33.

When you mix magnesium nitrate and sodium hydroxide, what will the product be?

If there is no reaction, type NR

(a)  

34.

When you mix sodium carbonate and copper chloride. Copper has a +2 charge in this reaction.

If there is no reaction, type NR

(a)  

35.

When you mix lithium chloride and potassium nitrate, what is the product?

If there is no reaction, type NR

(a)  

36.

When you mix iron II chloride and potassium carbonate. Iron has a +2 charge in this reaction.

If there is no reaction, type NR

(a)  

37.

When you mix copper (II) nitrate and potassium hydroxide, what is the product?

If there is no reaction, type NR

(a)  

38.

When you mix potassium chloride and sodium nitrate, what is the product?

If there is no reaction, type NR

(a)  

39.
Which of the following does NOT form a precipitate?
a)
Pb(NO3)2(aq) + 2KI(aq) 
b)
Sr(NO3)2 (aq) + K2SO4(aq) →
c)
AgNO3(aq) + Na2S(aq) →
d)
 Pb(NO3)2(aq) + AgNO3(aq) →
40.
In this equation,
CuCl2 + NaOH  → Cu(OH)2 + NaCl
Which product is insoluble?
a)
copper(II) hydroxide
b)
sodium chloride
c)
sodium hydroxide
d)
copper(II) chloride
41.

What is the product of the reaction between potassium bromide and ammonium sulfide?

If there is no reaction, type NR

(a)  

42.

What is the precipitate formed when you mix silver nitrate with copper chloride? Silver has a +1 charge for this reaction

If there is no reaction, type NR

(a)  

43.

In a chemical equation, a reactant or product labeled ​ (a)   is a solid and a reactant or product labeled ​ (b)   is dissolved in water

Choose from the below words
(s)
(aq)
(l)
(w)
(g)
(d)
(p)
44.

In a double replacement reaction, a product that is soluble in water will be labeled ​ (a)   and a product that is a precipitate will be labeled ​ (b)  

Choose from the below words
(aq)
(s)
(w)
(l)
(g)
(d)
(p)
45.

A special double replacement reaction that produces water instead of a precipitate

a)

neutralization

b)

aqueous

c)

solution

d)

vaporization

e)

no reaction

46.

A neutralization reaction is a double replacement reaction that produces _____ instead of a precipitate

a)

water

b)

solid

c)

vaporization

d)

aqueous

e)

sublimation

47.

Predict the products of this reaction: Al2(SO4)3 + Ca3(PO4)2 --->

a)

This reaction will not occur

b)

Al(PO4) + Ca(SO4)

c)

Al2Ca3 + (PO4)2(SO4)3

d)

Al2(SO4)3 + Ca3(SO4)3

48.

Predict the products of this reaction: AgF + KCl --->

a)

This reaction will not occur.

b)

AgCl + KF

c)

AgCl3 + KF2

d)

AgK + ClF

49.

What are the products of this reaction: Na(NO3) + CaF2 --->

a)

This reaction will not occur

b)

NaF + Ca(NO3)2

c)

NaF2 + Ca(NO3)

d)

NaCa + F(NO3)

50.
What is a double replacement?
a)
Two compounds react to form two new compounds.
b)
One compound reacts to form two separate elements.
c)
Two elements reacting to form a single compound.
d)
A hydrocarbon and 
51.
What is the left part of a chemical equation called?
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
52.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
53.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
54.

What is the number before a chemical formula called? (in this equation referring to the blue 2)

Ex: 2H2 + O2 --> 2H2O

a)

Coefficient

b)

Subscript

c)

Atom

d)

Equation

55.
Balance this equation
_Al +_HCl --> _H+_AlCl3
a)
2, 6, 3, 2
b)
it is already balanced
c)
4, 12, 3, 4
d)
2, 1, 4, 5
56.
The blue numbers in the image below represent ________
a)
Charges
b)
coefficients
c)
subscripts
d)
none of the answers are correct
57.
Balance this equation:
P4+O2  -->  P2O3
a)
3 P4+ O--> 2 P2O3
b)
 P4+ O--> 2 P2O3
c)
 P4+ 3 O2 --> 2 P2O3
d)
 P4+ 2 O--> 3 P2O3
58.
What is the state of matter symbol for an insoluble compound?
a)
(s)
b)
(aq)
c)
(g)
d)
(l)
59.

Which of these is a balanced double replacement reaction?

a)

Al2O3 (s) + 3 CO2 (g) --> Al2(CO3)3

b)

Ba(OH)2 (s) → BaO (s) + H2O (aq)

c)

2 KF(aq) + Ca(NO3)2 (aq) → CaF2 (s) + 2 KNO3 (aq)

d)

2 AgClO3 (aq) + Cu (s) --> Cu(ClO3)2 (aq) + 2 Ag (s)

60.

Which of the following pairs of solutions produces a precipitate when combined?

a)

Cu(NO3)2 and NaCl

b)

Fe(NO3)3 and MgCl2

c)

Cu(NO3)2 and K2CO3

d)

CaCl2 and NaNO3

61.

Use the solubility chart to determine if this is a chemical reaction and if so, what formed a precipitate?


Li2S + 2AgNO3 2LiNO3 + Ag2S

a)

Yes, and LiNO3 formed a precipitate.

b)

Yes, and Ag2S formed a precipitate.

c)

No, it is not a chemical reaction because no precipitate formed.

62.

In order for a double replacement reaction to occur, aqueous ions in solution must be removed from the solution. This can happen by the formation of

a)

a precipitate (solid)

b)

water

c)

a gas

d)

any of these

63.

What does (aq) mean when written in a chemical equation?

a)

substance in in a water solution

b)

the reaction is very slow

c)

the reaction is awesome!

d)

the substance is in a solid state.

64.

In a reaction, chemical bonds

a)

are broken

b)

are formed

c)

nothing happens to them

d)

are broken and/or formed

65.

Which of the following best describes a precipitate?

a)

solid powder that falls out of solution when a solid and liquid reactant combine

b)

solid powder that falls out of solution when two aqueous reactants combine

c)

solid powder that falls out of solution when aqueous and gaseous reactants combine

66.

Which of the following best describes a precipitate?

a)

an insoluble solid

b)

a soluble solid

c)

a soluble gas

d)

an insoluble liquid

67.

Which type of reaction can be a precipitate reaction?

a)

synthesis reaction

b)

single replacement reaction

c)

double replacement reaction

d)

combustion reaction

68.

AB (aq) + CD (aq) → AD (aq) + CB(s)


Which substance is the precipitate in the reaction above?

a)

AB

b)

CD

c)

AD

d)

CB

69.

According to the solubility rules (chart), compounds containing Ammonium cations, NH4+ are:

a)

Not Soluble

b)

Sometimes Soluble

c)

Always Soluble

d)

Always insoluble

70.

According to the solubility rules (reference chart), compounds containing Hydroxide anions, OH-

a)

are insoluble when combined with ammonium

b)

are always insoluble

c)

are soluble when combined with group 1 elements

d)

are insoluble when they form compounds with Calcium

71.

Use the Solubility Rules to determine if the following compound is soluble in water:


MgCl2

a)

Soluble

b)

Insoluble

72.

Use the Solubility Rules to determine if the following compound is soluble in water:


CaSO4

a)

Soluble

b)

Insoluble

73.

Use the Solubility Rules to determine if the following compound is soluble in water:


(NH4)2CO3

a)

Soluble

b)

Insoluble

74.

Use the Solubility Rules to determine if the following compound is soluble in water:


PbBr2

a)

Soluble

b)

Insoluble

75.

Use the Solubility Rules to determine if the following compound is soluble in water:


HCl

a)

Soluble

b)

Insoluble

76.

Use the Solubility Rules to determine if the following compound is soluble in water:


CaS

a)

Soluble

b)

Insoluble

77.

Use the Solubility Rules to determine if the following compound is soluble in water:


Ca(OH)2

a)

Soluble

b)

Insoluble

78.

Use the Solubility Rules to determine if the following compound is soluble in water:


Li2S

a)

Soluble

b)

Insoluble

79.

Use the Solubility Rules to determine if the following compound is soluble in water:


NaNO3

a)

Soluble

b)

Insoluble

80.

CaCl2(aq) + 2 AgNO3(aq) → Ca(NO3)2(aq) + 2 AgCl(s)


Give 2 clues that the reaction above is called a precipitate reaction

a)

It's a double replacement reaction that forms one aqueous and one solid product

b)

It's a single replacement reaction that forms one aqueous and one solid product

c)

It's a double replacement reaction that forms two aqueous products

d)

It's a single replacement reaction that forms two aqueous products

81.

CaCl2(aq) + 2 AgNO3(aq) → Ca(NO3)2(aq) + 2 AgCl(s)


Which product above is the precipitate?

a)

CaCl2(aq)

b)

AgNO3(aq)

c)

Ca(NO3)2(aq)

d)

AgCl(s)

82.

Predict the Products of the double-replacement (precipitate) reaction


MgCl2(aq) + NaOH(aq)

a)

MgCl2(aq) + NaOH(aq)

b)

Mg(OH)2 (s) + NaCl (aq)

c)

MgNa (s) + ClOH (aq)

d)

Mg(OH)2 (aq) + NaCl (s)

83.

Predict the Products of the double-replacement (precipitate) reactions


Pb(NO3)2(aq) + MgI2(aq) →

a)

Pb(NO3)2 (aq) + MgI2 (s)

b)

PbI2 (s) + Mg(NO3)2 (aq)

c)

Pb(NO3)2 (s) + MgI2 (aq)

d)

PbMg (s) + I(NO3)2 (aq)

84.

Predict the Products of the double-replacement (precipitate) reactions


K3PO4(aq) + AlCl3(aq) →

a)

K3PO4 (s) + AlCl (aq)

b)

KCl (aq) + Al2(PO4)3 (s)

c)

KCl (s) + Al2(PO4)3 (aq)

d)

K3AL (s) + Cl3PO4 (aq)

85.

When solutions of two ionic compounds are combined and a solid forms, the process is called

a)

hydration

b)

solvation

c)

dissociation

d)

precipitation

86.

Which of the following pairs of solutions produces a precipitate when combined?

a)

Cu(NO3)2 and NaCl

b)

Fe(NO3)3 and MgCl2

c)

Cu(NO3)2 and K2CO3

d)

CaCl2 and NaNO3

87.

When solutions of MgCO3 and Fe2(SO4)3 are combined, what precipitate(s) forms?

a)

MgSO4

b)

neither form a precipitate

c)

MgSO4 and Fe2(CO3)3

d)

Fe2(CO3)3

88.

In writing the chemical equation for a precipitation reaction, what abbreviation of the physical state must appear with one of the products?

a)

(s)

b)

(g)

c)

(l)

d)

(w)

89.

Which of the following compounds is INSOLUBLE?

a)

magnesium phosphate

b)

magnesium sulfate

c)

magnesium iodide

d)

magnesium nitrate

e)

none of the above

90.
KBr
a)
Soluble
b)
Insoluble
91.

Zinc Hydroxide

a)

Soluble

b)

Insoluble

92.

Sodium Acetate

a)

soluble

b)

insoluble

93.

In the laboratory, a student mixes aqueous solutions of Nickel Sulfate and Sodium hydoxide. What will the precipitate be?

a)

Ni(OH)2

b)

Na2SO4

c)

SO2

d)

no precipitate will form

94.

Which of these is a balanced double replacement reaction?

a)

Al2O3 (s) + 3 CO2 (g) --> Al2(CO3)3

b)

Ba(OH)2 (s) → BaO (s) + H2O (aq)

c)

2 KF(aq) + Ca(NO3)2 (aq) → CaF2 (s) + 2 KNO3 (aq)

d)

2 AgClO3 (aq) + Cu (s) --> Cu(ClO3)2 (aq) + 2 Ag (s)

95.

Mixing Aqueous Iron (II) Nitrate and Aqueous Sodium Carbonate causes an orange precipitate to form. What is the chemical formula of the precipitate?

a)

Fe(NO3)2 (s)

b)

FeCO3 (s)

c)

NaNO3 (s)

d)

Na2(NO3)2 (s)

96.

Use your solubility rules to determine if soluble or insoluble:

KBr

a)

Soluble

b)

Insoluble

97.

Use your solubility rules to determine if soluble or insoluble:

Zinc Hydroxide

a)

Soluble

b)

Insoluble

98.

Use your solubility rules to determine if soluble or insoluble:

Silver Iodide

a)

Soluble

b)

Insoluble

99.

Use your solubility rules to determine if soluble or insoluble:

Zinc Carbonate

a)

Soluble

b)

Insoluble

100.

Use your solubility rules to determine if soluble or insoluble:

KOH

a)

Soluble

b)

Insoluble

101.

Use your solubility rules to determine if soluble or insoluble:

Silver acetate

a)

Soluble

b)

Insoluble

102.
4Si + S8 --> 2Si2S4
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
103.
3Ca + 2AlCl3 --> 3CaCl2 + 2Al
a)
Synthesis
b)
Decomposition
c)
Single diplacement
d)
Double displacement
104.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Double displacement
105.
2Pb(NO3)2 --> 2PbO + 4NO2 + O2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
106.
3Mg + N2 --> Mg3N2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
107.
2NO2 --> N2 + 2O2
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Combustion
108.
P4 + 3O--> 2P2O3
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
109.
Fe + H2SO4 --> Fe2(SO4)3 + H2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
110.
Which reaction type is the following: C5H10O4 + O2 --> CO2 + H2O
a)
Decomposition
b)
Single Replacement
c)
Combustion
d)
Double Replacement
111.
PbCl2 + AgNO3 ---> Pb(NO3)2 + AgCl 
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
112.
type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products
a)
Double Displacement
b)
Single Displacement
c)
Synthesis
d)
Decomposition
113.
Which is the name of the kind of solid substance formed in this figure?  
a)
aqueous 
b)
precipitate
c)
acid
d)
synthesis 
114.
Provides evidence that a chemical reaction has occurred. 
a)
dissolving 
b)
melting
c)
formation of a gas
d)
bending
115.
What is the probable product of a double-replacement reaction?
a)
A new compound and a replaced metal
b)
A new compound and a replaced nonmetal
c)
2 different compounds 1 aqueous and 1 that is a solid, liquid or gas
d)
A single compound
116.

What type of chemical reaction has a general formula of:

AB + CD ----> CB + AD

a)

Synthesis

b)

Combustion

c)

Single Replacement

d)

Double Replacement

e)

Decomposition

117.

What type of chemical reaction is shown in this equation?

Zn + 2HCl --> ZnCl2 + H2

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

118.

When heated, Copper (II) Carbonate yields Copper (II) Oxide and Carbon Dioxide. What type of reaction is this?

a)

Combustion

b)

Decomposition

c)

Double Replacement

d)

Single Replacement

e)

Synthesis

119.

What is the general reaction formula for a single replacement reaction?

a)

A + B --> AB

b)

AB --> A + B

c)

A + CD --> C + AD

d)

AB + CD --> CB + AD

e)

CxHy+O2 > CO2+H2OC_xH_y+O_2\ ->\ CO_2+H_2O

120.

What type of chemical reaction occurs when two elements react to form one product?

a)

Single Replacement

b)

Combustion

c)

Double Replacement

d)

Synthesis

e)

Decomposition

121.

What type of chemical reaction is shown here?

2C3H7OH +9O2 -> 6CO2 + 8H2O

a)

Double Replacement

b)

Combustion

c)

Single Replacement

d)

Decomposition

e)

Synthesis

122.

When two compounds react and a precipitate is formed as one of the products. What type of chemical reaction occurred?

a)

Synthesis

b)

Combustion

c)

Single Replacement

d)

Decomposition

e)

Double Replacement

123.

Two chemicals reacted and one of the products stays dissolved in the solution. What symbol is used to indicate this?

a)

(s)

b)

(l)

c)

(aq)

d)

(g)

124.

Predict the products for this substance: Al2O3 → ? + ?

a)

Al + O2

b)

O2 + Al3

c)

Al2 + O3

d)

Al + O

e)

Al3 + O

125.

Predict the products if Calcium Carbonate reacts with Silver Sulfate.

CaCO3 + Ag2SO4 → ?

a)

Ag2CO3 + Ca2SO4

b)

AgCO3 + CaSO4

c)

CaSO4 + Ag2CO3

d)

Ag(CO3)2 + CaSO4

126.

In a reaction, Barium Chloride reacts with Potassium Carbonate to produce Barium Carbonate and Potassium Chloride. Determine the solubility of each product. Which answer choice correctly states one of the products?

a)

BaCl2 (aq)

b)

KCl (s)

c)

BaCO3 (s)

d)

K2CO3 (aq)

e)

BaCO3 (aq)

127.

If Ethylene (C2H4) reacts with Oxygen gas in a chemical reaction, what are the products?

a)

C2O2 + H4

b)

CO2 + H2 + O2

c)

CO + H2

d)

CO2 + H2O

128.

Magnesium Oxide reacts with Water to produce Magnesium Hydroxide. What type of reaction is this?

a)

Decomposition

b)

Synthesis

c)

Single Replacement

d)

Combustion

e)

Double Replacement

129.

Barium Bromide reacts with Lithium Phosphate to yield Lithium Bromide and Barium Phosphate. What substance forms the precipitate in this reaction?

a)

Lithium Phosphate

b)

Lithium Bromide

c)

Barium Bromide

d)

Barium Phosphate

130.

Using the solubility rules, which answer choice best describes the compound of Lead (II) Sulfate?

a)

Insoluble and aqueous in a solution

b)

Soluble and forms a precipitate

c)

Insoluble and forms a precipitate

d)

Soluble and aqueous in a solution