Chem 110
Exam #4
Name___________________
April 1, 2017
Closed Book Exam - No books or notes allowed. All work must be shown for full
credit. You may use a calculator.
Question
Credit
Part I (40)
Part II (60)
TOTAL
Part I
Please name the following compounds and indicate if they are soluble or insoluble
FeCl3
___Iron
(III) Chloride______________________
Soluble
Insoluble
SrCO3
___Strontium
Carbonate__________________
Soluble
Insoluble
N2S5
___dinitrogen
pentasulfide_______________
Soluble
Insoluble
(NH4)2S
___Ammonium
Sulfide____________________
Soluble
Insoluble
H3PO4 (aq)
___Phosphoric
acid_________________________
Soluble
Insoluble
Please write the formula of the following compounds and indicate if they are soluble
or insoluble
Copper (I) Sulfate
_______Cu2SO4________________________________
Soluble
Insoluble
Calcium Nitrate
_______Ca(NO3)2_____________________________
Soluble
Insoluble
Aluminum Hydroxide_______Al(OH)3______________________________
Soluble
Insoluble
Tricarbon tetranitride
_____C3N4___________________________________
Soluble
Insoluble
________H2SO4(aq)____________________________
Soluble
Insoluble
Sulfuric Acid
Part II
1.
What is the coefficient of hydrogen gas after balancing the following equation?
N2(g) +
3 H2(g)  NH3(g)
(a) 1
(b) 2
(c) 3
(d) 4
(e) none of the above
2.
What is the coefficient of ammonia gas after balancing the following equation?
N2(g) +
3 H2(g) 2 NH3(g)
(a) 1
(b) 2
(c) 3
(d) 4
(e) none of the above
3.
What is the coefficient of chlorine gas after balancing the following equation?
2 Fe(s) + _3_Cl2(g)2 FeCl3(s)
(a)
(b)
(c)
(d)
(e)
4.
1
2
3
4
none of the above
What is the coefficient of carbon dioxide after balancing the following equation?

2 KHCO3(s)  
(a) 1
(b) 2
(c) 3
(d) 4
(e) none of the above
K2CO3(s) +
H2O(g) +
CO2(g)
5.
What is the coefficient of carbon dioxide after balancing the following equation?
Cr2(CO3)3(s)

 
Cr2O3(s) +
3 CO2(g)
(a) 1
(b) 2
(c) 3
(d) 4
(e) none of the above
6. What is the coefficient of oxygen gas after balancing the following equation?
2 AgClO3(s)



AgCl(s) +
3 O2(g)
(a) 1
(b) 2
(c) 3
(d) 4
(e) none of the above
7. What is the coefficient of oxygen gas after balancing the following equation?
2 LiNO3(s)


2 LiNO2(s) +
O2(g)
(a) 1
(b) 2
(c) 3
(d) 4
(e) none of the above
8. What is the coefficient of oxygen gas after balancing the following equation?

2 HgO(s) 2 Hg(s) +
(a) 1
(b) 2
(c) 3
(d) 4
(e) none of the above
O2(g)
9. Which of the following types of chemical reactions is illustrated below?
N2(g) + H2(g) NH3(g)
(a)
(b)
(c)
(d)
(e)
combination
decomposition
single replacement
double replacement
neutralization
10. Which of the following types of chemical reactions is illustrated below?
SO2(g) + O2(g) SO3(g)
(a)
(b)
(c)
(d)
(e)
combination
decomposition
single replacement
double replacement
neutralization
11. Which of the following types of chemical reactions is illustrated below?

KHCO3(s) 
(a)
(b)
(c)
(d)
(e)
K2CO3(s) +
H2O(g) + CO2(g)
combination
decomposition
single replacement
double replacement
neutralization
12. Which of the following types of chemical reactions is illustrated below?
KClO3(s)
(a)
(b)
(c)
(d)
(e)


combination
decomposition
single replacement
double replacement
neutralization
KCl(s)
+ O2(g)
13. Which of the following types of chemical reactions is illustrated below?
AlCl3(aq) + AgNO3(aq)  Al(NO3)3(aq) + AgCl(s)
(a)
(b)
(c)
(d)
(e)
combination
decomposition
single replacement
double replacement
neutralization
14. Which of the following types of chemical reactions is illustrated below?
FeBr3(aq) + AgNO3(aq)  Fe(NO3)3(aq) + AgBr(s)
(a)
(b)
(c)
(d)
(e)
combination
decomposition
single replacement
double replacement
neutralization
15. What is the predicted product from the following combination reaction?
Li(s) + O2(g) 
(a)
(b)
(c)
(d)
(e)


LiO
Li2O
LiO2
Li2O3
Li3O2
16. What is the predicted product from the following combination reaction?
Ca(s) + O2(g)
(a)
(b)
(c)
(d)
(e)
CaO
Ca2O
CaO2
Ca2O3
Ca3O2


17. What is the predicted product from the following combination reaction?
Zn(s) + I2(s)
(a)
(b)
(c)
(d)
(e)


ZnI
ZnI2
Zn2I
Zn2I3
Zn3I2
18. What is the formula of the predicted product from heating magnesium metal
and nitrogen gas?
(a) MgN
(b) MgN2
(c) Mg2N
(d) Mg2N3
(e) Mg3N2
19. What is the formula of the predicted product from heating potassium metal and
powdered phosphorus?
(a) KP
(b) KP3
(c) K3P
(d) K2P3
(e) K3P2
20. What is the formula of the predicted product from heating cadmium metal and
powdered sulfur?
(a) CdS
(b) Cd2S
(c) CdS2
(d) Cd2S3
(e) Cd3S2
21. What are the predicted products from the following decomposition reaction?
LiHCO3(s)
(a)
(b)
(c)
(d)
(e)
Li, H2, and CO2
Li, H2O, and CO2
Li2CO3, H2, and CO2
Li2CO3, H2O, and CO2
Li2CO3 and H2O


22. What are the predicted products from the following decomposition reaction?
Al(HCO3)3(s)
(a)
(b)
(c)
(d)
(e)


Al, H2, and CO2
Al, H2O, and CO2
Al2(CO3)3, H2, and CO2
Al2(CO3)3, H2O, and CO2
Al2(CO3)3 and H2O
23. What are the predicted products from the following decomposition reaction?
Fe(HCO3)3(s)
(a)
(b)
(c)
(d)
(e)


Fe, H2O, and CO2
FeCO3, H2, and CO2
FeCO3, H2O, and CO2
Fe2(CO3)3, H2O, and CO2
Fe2(CO3)3, H2, and CO2
24. What are the predicted products from the following decomposition reaction?
Cu2CO3(s)
(a)
(b)
(c)
(d)
(e)


Cu and CO2
Cu2O and CO
Cu2O and CO2
CuO and CO
CuO and CO2
254. What are the predicted products from the following decomposition reaction?
Fe2(CO3)3(s)
(a)
(b)
(c)
(d)
(e)
Fe and CO2
FeO and CO
FeO and CO2
Fe2O3 and CO
Fe2O3 and CO2


26. What are the products from the following single–replacement reaction?
Zn(s) + CuSO4(aq) 
(a)
(b)
(c)
(d)
(e)
Cu and ZnSO4
Cu and ZnSO3
CuO and ZnSO4
CuO and ZnSO3
no reaction
274. What are the products from the following single–replacement reaction?
Cd(s) + AgNO3(aq) 
(a) Ag and Cd(NO3)2
(b) Ag and Cd(NO2)2
(c) Ag2O and Cd(NO3)2
(d) Ag2O and Cd(NO2)2
(e) no reaction
28. What are the products from the following single–replacement reaction?
Al(s) + Pb(NO3)2(aq) 
(a)
(b)
(c)
(d)
(e)
Pb and Al(NO3)3
Pb and Al(NO2)3
PbO and Al(NO3)3
PbO and Al(NO2)3
no reaction
29. Which of the following solid compounds is soluble in water?
(a) Na2CO3
(b) CuC2H3O2
(c) AgNO3
(d) all of the above
(e) none of the above
30. Which of the following solid compounds is soluble in water?
(a) CaCO3
(b) PbSO4
(c) AlPO4
(d) all of the above
(e) none of the above
31. Which of the following solid compounds is soluble in water? No correct answer!
(a) NiCO3
(b) PbCrO4
(c) Ag3PO4
(d) CuS
(e) Ba(OH)2
32. Which of the following solid compounds is insoluble in water?
(a) PbCl2
(b) Hg2I2
(c) BaSO4
(d) all of the above
(e) none of the above
33. Which of the following solid compounds is insoluble in water?
(a) Li2CO3
(b) AgC2H3O2
(c) Cu(NO3)2
(d) all of the above
(e) none of the above
34. Which of the following solid compounds is insoluble in water?
(a) (NH4)2CO3
(b) K2CrO4
(c) BaSO4
(d) Na2S
(e) Sr(OH)2
356. What are the products from the following double–replacement reaction?
AgNO3(aq) + NaCl(aq) 
(a)
(b)
(c)
(d)
(e)
Ag3N and NaClO3
AgCl and NaNO2
AgCl and NaNO3
AgClO3 and NaNO2
AgClO3 and NaNO3
36. What are the products from the following double–replacement reaction?
BaCl2(aq) + K2SO4(aq) 
(a)
(b)
(c)
(d)
(e)
BaS and KClO4
BaSO3 and KCl
BaSO3 and KClO4
BaSO4 and KCl
BaSO4 and KClO4
37. What are the products from the following double–replacement reaction?
AgNO3(aq) + Li3PO4(aq) 
(a) Ag3P and LiNO3
(b) Ag3PO3 and LiNO2
(c) Ag3PO3 and LiNO3
(d) Ag3PO4 and LiNO2
(e) Ag3PO4 and LiNO3
38. What are the predicted products from the following neutralization reaction?
HCl(aq) + NH4OH(aq) 
(a)
(b)
(c)
(d)
(e)
NH3Cl and H2O
NH3Cl and O2
NH4Cl and H2O
NH4Cl and O2
no reaction
39. What are the predicted products from the following neutralization reaction?
HC2H3O2(aq) + Ca(OH)2(aq) 
(a)
(b)
(c)
(d)
(e)
CaCO3 and H2O
Ca(HCO3)2 and H2
Ca(HCO3)2 and H2O
Ca(C2H3O2)2 and H2
Ca(C2H3O2)2 and H2O
40. What are the predicted products from the following neutralization reaction?
HNO3(aq) + Ba(OH)2(aq)
(a)
(b)
(c)
(d)
(e)
Ba3N2 and H2O
Ba(NO2)2 and H2
Ba(NO2)2 and H2O
Ba(NO3)2 and H2
Ba(NO3)2 and H2O
41. What is the ionic charge for the copper ion in Cu2S?
(a)
zero
(b)
1+
(c)
2+
(d)
3+
(e)
none of the above
42. What is the ionic charge for the lead ion in PbO2?
(a)
zero
(b)
1+
(c)
2+
(d)
4+
(e)
none of the above
43. What is the ionic charge for the gold ion in AuCl3?
(a)
zero
(b)
1+
(c)
2+
(d)
3+
(e)
none of the above
44. What is the ionic charge for the cobalt ion in Co3N2?
(a)
zero
(b)
1+
(c)
2+
(d)
3+
(e)
none of the above
45. What is the ionic charge for the iron ion in Fe2(SO4)3?
(a)
zero
(b)
1+
(c)
2+
(d)
3+
(e)
none of the above