CHM 151 EXAM #2 QUESTIONS WITH 100%
CORRECT ANSWERS!!
A soluble molecular compound has the ability to conduct electricity: True or
False? Answer - False
Which of the following is (are) example(s) of a weak electrolyte?
a. HCl
b. NH3
c. KOH
d. HCN
e. b and c
f. b and d Answer - f. b and d
A reaction that takes place in an aqueous solution and results in the production
of a solid substance is an example of a ___ reaction. Answer - precipitation
When AgNO3 reacts with HCl the products are:
a. H2 (g)
b. nitric acid
c. AgCl (s)
d. AgCl (aq)
e. b and c
, f. b and d Answer - e. b and c
What is the net ionic equation when HC2H3O2 reacts with NaOH?
a. HC2H3O2 (aq) + NaOH (aq) →C2H3O2Na (aq) + H2O (l)
b. H^+ (aq) + OH^- (aq) →H2O (l)
c. HC2H3O2 (aq) + 2OH^- (aq) → C2H3O2^- (aq) + 2H2O (l)
d. HC2H3O2 (aq) + OH^- → C2H3O2^- (aq) + H2O (l) Answer - d. HC2H3O2 (aq)
+ OH^- → C2H3O2^- (aq) + H2O (l)
True or false: Ba(OH)2 is insoluble in water Answer - false
A Bronsted-Lowry acid/base reaction is best defined as:
a. combination reaction
b. redox reaction
c. loss of a proton
d. a proton transfer reaction Answer - d. a proton transfer reaction
A diprotic acid has ___ acidic protons.
a. many
b. 2
c. 3
d. 4 Answer - b. 2
The gas formed when Na2S reacts with H2SO4 is:
a. SO3
b. SO2
c. H2S
CORRECT ANSWERS!!
A soluble molecular compound has the ability to conduct electricity: True or
False? Answer - False
Which of the following is (are) example(s) of a weak electrolyte?
a. HCl
b. NH3
c. KOH
d. HCN
e. b and c
f. b and d Answer - f. b and d
A reaction that takes place in an aqueous solution and results in the production
of a solid substance is an example of a ___ reaction. Answer - precipitation
When AgNO3 reacts with HCl the products are:
a. H2 (g)
b. nitric acid
c. AgCl (s)
d. AgCl (aq)
e. b and c
, f. b and d Answer - e. b and c
What is the net ionic equation when HC2H3O2 reacts with NaOH?
a. HC2H3O2 (aq) + NaOH (aq) →C2H3O2Na (aq) + H2O (l)
b. H^+ (aq) + OH^- (aq) →H2O (l)
c. HC2H3O2 (aq) + 2OH^- (aq) → C2H3O2^- (aq) + 2H2O (l)
d. HC2H3O2 (aq) + OH^- → C2H3O2^- (aq) + H2O (l) Answer - d. HC2H3O2 (aq)
+ OH^- → C2H3O2^- (aq) + H2O (l)
True or false: Ba(OH)2 is insoluble in water Answer - false
A Bronsted-Lowry acid/base reaction is best defined as:
a. combination reaction
b. redox reaction
c. loss of a proton
d. a proton transfer reaction Answer - d. a proton transfer reaction
A diprotic acid has ___ acidic protons.
a. many
b. 2
c. 3
d. 4 Answer - b. 2
The gas formed when Na2S reacts with H2SO4 is:
a. SO3
b. SO2
c. H2S
