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Worksheets

Double Displacement Reactions

Total questions: 26

Worksheet time: 3hrs 55mins

Name
Class
Date
1.

What will the balanced equation be if you react:

CaCl2 + NaOH

a)

CaCl2 + 2 NaOH --> Ca(OH)2 + 2 NaCl

b)

CaCl2 + 2 NaOH --> CaOH + 2 NaCl

c)

CaCl2 + 2 NaOH --> CaNa2 + 2 ClOH

d)

no reaction

2.

What is the precipitate formed between CaCl2 and NaOH?

a)

CaCl2

b)

NaOH

c)

Ca(OH)2

d)

NaCl

e)

no precipitate is formed

3.

Will the reaction between NaOH and KCl occur?

a)

Yes

b)

No

4.

Mark the indicators of a double displacement reaction.

a)

Water is formed

b)

gas is formed

c)

a precipitate is formed

d)

a phase change occurs

e)

none of these are correct

5.

Will the reaction between Cu(NO3)2 and K2SO4 happen?

a)

yes

b)

no

6.

Which equation is a double displacement reaction?

a)

Cl2 + 2KI --> 2KCl

b)

Fe + O2 --> Fe2O3

c)

CaCO3 --> CO2 + CaO

d)

CaCO3 + 2HCl --> CaCl2 + H2CO3

7.

What are the products for a reaction between KCl and AgNO3

a)

KAg + ClNO3

b)

KCl + AgNO3

c)

KNO3 + AgCl

d)

no reaction occurs

8.

What is the correct products for a reaction between NaNO3 and CuCl2

a)

NaCu + ClNO3

b)

NaCl + Cu(NO3)2

c)

NaNO3 + CuCl2

d)

No reaction occurs

9.

Identify the single replacement reaction

a)

Cl2 + 2KI --> 2 KCl + I2

b)

Fe + O2 --> Fe2O3

c)

CaCO3 --> CaO + CO2

d)

2P + 5O2 --> P2O5

10.

Identify the decomposition reaction

a)

Cl2 + 2KI --> 2 KCl + I2

b)

Fe + O2 --> Fe2O3

c)

CaCO3 --> CaO + CO2

d)

2P + 5O2 --> P2O5

11.

Which equation is a double displacement reaction?

a)

Cl2 + 2KI --> 2KCl

b)

Fe + O2 --> Fe2O3

c)

CaCO3 --> CO2 + CaO

d)

CaCO3 + 2HCl --> CaCl2 + H2CO3

12.

Predict the products:

Mg(NO3)2 + CaCl2

a)

Mg(NO3)2 + CaCl2

b)

MgCa + Cl2(NO3)2

c)

Ca(NO3)2 + MgCl2

d)

CaNO3 + MgCl

13.
AB + CD →AD + CB
a)
Double Replacement
b)
Single Replacement
c)
Synthesis
d)
Decomposition
14.

Which among the following is(are) double displacement

reaction(s)?

(i) Pb + CuCl2 --> PbCl2 + Cu

(ii) Na2SO4 + BaCl2 --> BaSO4 + 2NaCl

(iii) C + O2 --> CO2

(iv) CH4 + 2O2 --> CO2 + 2H2O

a)

(a) (i) and (iv)

b)

(b) (ii) only

c)

(c) (i) and (ii)

d)

(d) (iii) and (iv)

15.

Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?

(i) Displacement reaction

(ii) Precipitation reaction

(iii) Combination reaction

(iv) Double displacement reaction

a)

(a) (i) only

b)

(b) (ii) only

c)

(c) (iv) only

d)

(d) (ii) and (iv)

16.
In the following reaction, what sign is there that a precipitation reaction took place?
AgNO3 (aq) + NaOH (aq) → AgOH (s) + NaNO3 (aq)
a)
The formation of a nitrate
b)
The (aq), meaning aqueous or dissolved in water
c)
The (s), meaning the formation of a solid
d)
The base (OH) reactant 
17.
What is the state of matter symbol for an insoluble compound?
a)

(ppt)

b)
(aq)
c)
(g)
d)
(l)
18.

What is the state of matter symbol for a soluble compound?

a)

(ppt)

b)

(aq)

c)

(g)

d)

(l)

19.

Is AgCl (silver chloride) soluble or insoluble?

a)

Soluble

b)

Insoluble

c)

Neither

d)

Both

20.

NaC2H3O2 (sodium acetate) is ...

a)

soluble

b)

insoluble

21.

Zinc hydroxide, Zn(OH)2 is ...

a)

Soluble

b)

Insoluble

22.

The anion in NaC2H3O2 is

a)

Na+

b)

O2-

c)

C2H3O2-

d)

Na-

23.

The cation in H2SO4 is

a)

H2

b)

H+

c)

SO42-

d)

O4

24.

Predict the product(s) of this reaction (Don't worry about balancing the equation)

Pb(NO3)2 + KI →

a)

PbK(s) + INO3(aq)

b)

No Reaction

c)

PbI2(s) + KNO3(aq)

d)

PbI2(aq) + KNO3(s)

25.

Predict the products:

NaOH + Fe(NO3)3

a)

NaFe(s) + OH(NO3)3(aq)

b)

NaNO3(s) + Fe(OH)3(s)

c)

No reaction

d)

NaNO3(aq) + Fe(OH)3(s)

26.

Complete the following reaction:

HCl + Mg(OH)2 -->

a)

MgCl2 + H2O

b)

Mg +H2O

c)

MgCl2 + H2

d)

MgCl2 + H2O + CO2