Download Name: Date: Period: Chapter 7 Test (b) 1) Which of the following

Name:_________________
Date:__________________
Period:_______________
Chapter 7 Test (b)
1) Which of the following statements about balancing equations is FALSE?
a) If there is no coefficient or subscript, a one is implied
b) When coefficients are added the type of compound is changed in the chemical
reaction
c) Subscripts are multiplied by the coefficients to determine the number of atoms in
a compound
d) Coefficients are added to compounds to ensure both sides of the reactions have
equal number of each atom
e) All of the above statements are true statements
2) Consider the following precipitation reaction:
Pb(NO3)2(aq) + 2KI(aq)  PbI2(s) + 2KNO3(aq)
Which ion(s) would NOT be spectator ions?
a) Pb 2+; NO3b) K+; Ic) NO3-; K+
d) Pb2+; Ie) All of the above ions are in the net ionic equation
3) A precipitate (solid product) is expected to be formed when an aqueous solution of
sodium sulfate is added to an aqueous solution of:
a) Iron (III) chloride
b) Potassium chloride
c) Magnesium chloride
d) Barium chloride
e) None of the above
4) Carbon dioxide gas is a product when you react sulfuric acid with sodium hydrogen
carbonate
a) True
b) False
5) The following reaction is balanced and nothing further has to be done to it:
2HNO3(aq) + Na2SO3(aq)  H2SO3(g) + 2NaNO3 (aq)
a) True
b) False
6) Before a chemical reaction can be written, one must know:
a) The atomic mass of all the elements in the reaction
b) The molar mass of all the compounds
c) The symbols and formulas for all the reactants and products
d) The number of moles of all the reactants and product
Name:_________________
Date:__________________
Period:_______________
Chapter 7 Test (b)
7) An aqueous solution is:
a) any liquid with another compound dissolved in it
b) Any ionic compound with water dissolved in it
c) Water with a molecular compound dissolved in it
d) Water with another compound dissolved in it
e) None of the above
8) When a solution of magnesium chloride and silver nitrate are mixed the net ionic
equation is:
a) Mg2+(aq) + 2Cl-(aq) + 2Ag+(aq) 2NO3-(aq)  Mg2+(aq) + 2NO3-(aq) + 2AgCl(s)
b) Mg2+(aq) + 2Cl-(aq) + 2Ag+(aq) 2NO3-(aq)  Mg(NO3)2(aq) + 2AgCl(s)
c) Mg2+(aq) + 2NO3-(aq)  Mg(NO3)2(aq)
d) Ag+(aq) + Cl-(aq)  AgCl(s)
e) None of the above
9) Liquid ethanol (C2H5OH), on complete combustion in air produces:
1) CO2
2) H2
3) H2O
a) 1 and 2 only
b) 1 and 3 only
c) 2 and 3 only
d) All 1,2,3
e) None of them
10) What type of reaction is the generic equation AB + CD  AD + CB
a) Synthesis
b) Decomposition
c) Single-displacement
d) Double-displacement
e) None of the above
11) Consider the following precipitation reaction:
Pb(NO3)2(aq) + 2KI(aq)  PbI2(s) + 2KNO3(aq)
Which compound would not form ions in the complete ionic equation?
a) PbI2
b) KNO3
c) Pb(NO3)2
d) KI
e) All compounds form ions in the complete ionic equation
Name:_________________
Date:__________________
Period:_______________
Chapter 7 Test (b)
12) Identify the double displacement reactions among the following:
1. KCl(aq) + AgNO3(aq)  AgCl(s) + KNO3(aq)
2. Na2SO4(aq) + BaCl2(aq)  BaSo4(s) + 2NaCl(aq)
3. H2SO4(aq) + 2NaOH(aq)  Na2SO4(aq) + 2H2O(l)
a) 1 and 2 only
b) 1 and 3 only
c) 2 and 3 only
d) all of 1,2,and 3
e) None of 1,2, and 3
13) The net ionic equation for the reaction of sodium hydroxide plus hydrochloric acid is
Na+ + Cl-  NaCl (s)
a) True
b) False
14) What type of reaction occurs when a sodium hydroxide solution is mixed with an acetic
acid solution?
a) Precipitation reaction
b) Acid-base neutralization
c) Oxidation-reduction reaction
d) Gas evolution reaction
e) No reaction
15) What is the gas produced when hydrochloric acid id reacted with ammonium
carbonate?
a) NH3
b) Cl2
c) H2
d) CO2
e) None of the above
16) What type of reaction is the generic equation A + BC  AC + B?
a) Synthesis
b) Decomposition
c) Single-displacement
d) Double-displacement
e) None of the above
Name:_________________
Date:__________________
Period:_______________
Chapter 7 Test (b)
17) Which of the following statements about writing molecular, complete and net ionic
equations is FALSE?
a) A molecular equation is a chemical equation showing the complete, neutral formulas
for every compound in a reaction
b) A complete ionic equation is a chemical equation showing all of the species as they
are actually present in solution
c) A net ionic equation is an equation showing only the species that actually change
during the reaction
d) A spectator ion remains unchanged in the reaction and appears on both sides of the
equation
e) All the statements are true
18) What are the coefficients for the following reaction when it is properly balanced?
___Nitrogen monoxide + ____carbon monoxide  ____nitrogen + ___carbon dioxide
a)
b)
c)
d)
e)
2,1,1,2
2,2,1,2
2,2,2,1
1,1,2,2
None of the above
19) Which of the following compounds is INSOLUBE?
a) Potassium acetate
b) Lithium carbonate
c) Magnesium bromide
d) Aluminum sulfide
e) None of the above
20) Consider the following precipitation reaction:
Pb(NO3)2(aq) + 2KI(aq)  PbI2(s) + 2KNO3(aq)
Which ion(s) would NOT present in the complete ionic equation?
a) Pb 2+
b) K+
c) NO3d) Ie) All of the above ions are in the complete ionic equation
Name:_________________
Date:__________________
Period:_______________
Chapter 7 Test (b)
21) What are the coefficients for the following reaction when it is properly balanced?
___Hydrochloric acid + ___magnesium  ___magnesium chloride + ___hydrogen
a) 2,1,1,1
b) 2,1,2,2
c) 1,2,1/2,1
d) 1,1,1,2
e) None of the above
22) A reaction which forms a solid product is an example of a(n) ___________________.
a) Precipitation reaction
b) Acid-base neutralization
c) Oxidation-reduction reaction
d) Gas evolution reaction
e) No reaction
23) What is the molecular equation for the reaction of hydrochloric acid with potassium
hydroxide?
a) H2Cl + 2KOH  H2O + 2KCl
b) 2HCl + K(OH)2  2H2O + KCl2
c) H+ + OH-  H2O
d) HCl + KOH  H2O + KCl
24) Consider the following precipitation reaction:
Pb(NO3)2(aq) + 2KI(aq)  PbI2(s) + 2KNO3(aq)
What is the complete ionic equation?
a) Pb2+ + (NO3)2- + 2K+ + 2I-  PbI2(s) + 2K+ + 2NO3b) Pb2+ + 2NO3- + 2K+ + 2I-  PbI2(s) + 2K+ + NO3c) Pb2+ + 2NO3- + 2K+ + 2I-  PbI2(s) + 2K+ + 2NO3d) Pb2+ + 2NO3- + 2K+ + 2I-  Pb2+ + 2I- + 2K+ + 2NO3e) None of the above
25) What type of reaction occurs when silver nitrate solution is mixed with sodium
chloride?
a) a) Precipitation reaction
b) Acid-base neutralization
c) Oxidation-reduction reaction
d) Gas evolution reaction
e) No reaction