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Worksheets

Precipitate Rxn

Total questions: 21

Worksheet time: 33mins

Name
Class
Date
1.
KBr
a)
Soluble
b)
Insoluble
2.
NiCl2
a)
Soluble 
b)
Insoluble
3.
NH4NO3
a)
soluble
b)
insoluble
4.

What of these is always soluble?

a)

Nitrates

b)

Phosphates

c)

Carbonates

d)

Hydroxides

5.

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)

6.

Mixing Fe(NO3)2 (aq) and Na2CO3 (aq) 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)

7.

Mixing Al(NO3)3 (aq) and NH4OH (aq) results in the formation of a white precipitate. What is the molecular equation for this reaction?

a)

Al3+ (aq) + 3 OH- (aq) → Al(OH)3 (s)

b)

Al(NO3)3 (aq) + 3 NH4OH (aq) → Al(OH)3 (s) + 3 NH4NO3 (aq)

c)

NH4OH (aq) → NH4+ (aq) + OH- (aq)

d)

Al(NO3)3 (aq) → Al3+ (aq) + 3 NO3-(aq)

8.

Predict the products fo the following equation.

CuCl2 + H2S ---->

a)

CuS(s) + HCl(aq)

b)

Cu2S(s) + HCl(aq)

c)

No reaction

d)

CuS(s) + HCl(s)

9.

Predict the products of the following reaction.


H2SO4 + BaCl2 ---->

a)

BaSO4(s) + HCl(aq)

b)

BaSO4(aq) + HCl(s)

c)

No Reaction

d)

ClSO4(aq) + BaH(s)

10.

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

a)

hydration

b)

solvation

c)

dissociation

d)

precipitation

11.

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

12.
What precipitate forms when you mix barium nitrate with sodium sulfate?
a)
sodium nitrate 
b)
barium nitrate
c)
barium sulfate
d)
sodium sulfate
13.
Which is the correct net ionic equation for the reaction of AgNO3 and CaCl2?
a)
Ca2+(aq) +  2Cl- (aq) → CaCl(s)
b)
Ag+(aq)  +  Cl- (aq) → AgCl(s)
c)
Ag +  Cl  →  AgCl
d)
Ag+  +  Ca2+   →Ag2Ca (s)
14.
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) →
15.
What are the spectator ions in this reaction?
CuCl2(aq) + NaOH(aq) → Cu(OH)2(s) + NaCl(aq)
 
a)
Cu2+ and OH1-
b)
Na2+ and Cl2-
c)
Na1+ and Cl1-
d)
Na1+ and OH1-
16.

What is the correct net ionic equation for the reaction between HBr(aq) and LiOH(aq) that produces LiBr(aq) and H2O(l)?

a)

2 H+(aq) + O2-(aq) → H2O(l)

b)

2 H2 (aq) + O2(aq) → 2 H2O(l)

c)

2 H2 (g) + O2(g) → 2 H2O(l)

d)

H+(aq) + OH-(aq) → H2O(l)

17.

Which is the correct net ionic equation for this reaction?

3KOH(aq) + FeCl3(aq) → 3KCl(aq) + Fe(OH)3(s)

a)

3K+ (aq) + 3Cl- (aq) → 3KCl (s)

b)

Fe3+ (aq) + 3OH- (aq) → Fe(OH)3 (s)

c)

Fe3+ (aq) + Cl- (aq) → Fe(OH)3 (s)

d)

3K+ (aq) + 3OH- (aq) + Fe3+ (aq) + 3Cl- (aq) → Fe(OH)3 (s)

18.
What is the name of the precipitate formed in the reaction of calcium sulfide and aluminum nitrate
a)
calcium nitrate
b)
aluminum sulfide
c)
no ppt is formed
d)
aluminum nitrate
19.

What is a Net Ionic Equation?

a)

a balanced chemical equation in which all the reactants and products are given by their chemical formulae.

b)

a chemical equation that shows all soluble species broken into their respective ions.

c)

a chemical equation showing only the species which are actively involved in the reaction.

20.
H3PO4 is an example of a ...
a)
acid
b)
base
c)
salt
21.

What is the net ionic equation for the reaction between K3PO4 (aq) and CuSO4 (aq)

a)

2 K+(aq) + SO42-(aq) → K2SO4 (s)

b)

K+(aq) + SO42-(aq) → KSO4 (s)

c)

2 Cu2+(aq) + 3 PO43-(aq) → Cu3(PO4)2 (s)

d)

Cu2+(aq) + PO43-(aq) → CuPO4 (s)