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Per 2 Chapter 8 Prep Test

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 
 
Use the table below to answer the following questions.

General Solubility Guidelines
1. Most sodium, potassium, and ammonium compounds are soluble in water.
2. Most nitrates, acetates, and chlorates are soluble.
3. Most chlorides are soluble, except those of silver, mercury(I), and lead. Lead(II) chloride is soluble in hot water.
4. Most sulfates are soluble, except those of barium, strontium, and lead.
5. Most carbonates, phosphates, and silicates are insoluble, except those of sodium, potassium, and ammonium.
6. Most sulfides are insoluble, except those of calcium, strontium, sodium, potassium, and ammonium.
 

 1. 
Which of the following pairs of solutions produces a precipitate when combined?
a.
KOH and NH4Cl
c.
Na2SO4 and KCl
b.
Fe(NO)3 and KCl
d.
NH4Cl and AgNO3
 

 2. 
When solutions of NH4OH and K2SO4 are combined, what precipitate(s) forms?
a.
(NH4)2SO4
c.
(NH4)2SO4 and KOH
b.
KOH
d.
None of the above
 

 3. 
In a combustion reaction, one of the reactants is always ____.
a.
hydrogen
b.
nitrogen
c.
oxygen
d.
a metal
 

 4. 
The type of reaction that takes place when one element reacts with a compound to form a new compound and a different element is a ____.
a.
combination/synthesis reaction
c.
single-replacement reaction
b.
decomposition reaction
d.
double-replacement reaction
 

 5. 
In a double-replacement reaction, the ____.
a.
products are always carbon dioxide and water
b.
reactants are usually two ionic compounds
c.
reactants are two elements
d.
products are a new element and a new compound
 

 6. 
Which of the following is a balanced equation representing the decomposition of lead(IV) oxide?
a.
PbOmc006-1.jpg mc006-2.jpg Pb mc006-3.jpg 2O
c.
Pbmc006-8.jpgO mc006-9.jpg 2Pb mc006-10.jpg O
b.
PbOmc006-4.jpg mc006-5.jpg Pb mc006-6.jpg Omc006-7.jpg
d.
PbO mc006-11.jpg Pb mc006-12.jpg Omc006-13.jpg
 

 7. 
What are the correct formulas and coefficients for the products of the following double-replacement reaction when the reaction is balanced?
RbOH mc007-1.jpg Hmc007-2.jpgPOmc007-3.jpg mc007-4.jpg
a.
Rb(POmc007-5.jpg)mc007-6.jpg mc007-7.jpg Hmc007-8.jpgO
c.
Rbmc007-12.jpgPOmc007-13.jpg mc007-14.jpg 3Hmc007-15.jpgO
b.
RbPOmc007-9.jpg mc007-10.jpg 2Hmc007-11.jpgO
d.
Hmc007-16.jpgRb mc007-17.jpg POmc007-18.jpgOH
 

 8. 
Which of the following statements is true about single-replacement reactions?
a.
They are restricted to metals.
b.
They involve a single product.
c.
One reactant switches places with another.
d.
Any metal replaces any other metal.
 

 9. 
A double-replacement reaction takes place when aqueous Namc009-1.jpgCOmc009-2.jpg reacts with aqueous Sn(NOmc009-3.jpg)mc009-4.jpg. You would expect one of the products of this reaction to be ____.
a.
Na2COmc009-5.jpg
b.
NaSn
c.
SnCOmc009-6.jpg
d.
CNOmc009-7.jpg
 

 10. 
The reaction 2Fe mc010-1.jpg 3Clmc010-2.jpg mc010-3.jpg 2FeClmc010-4.jpg is an example of which type of reaction?
a.
combustion reaction
c.
combination reaction
b.
single-replacement reaction
d.
decomposition reaction
 

 11. 
The equation Mg(s) mc011-1.jpg 2HCl(aq) mc011-2.jpg MgClmc011-3.jpg(aq) mc011-4.jpg Hmc011-5.jpg(g) is an example of which type of reaction?
a.
combination reaction
c.
decomposition reaction
b.
single-replacement reaction
d.
double-replacement reaction
 

 12. 
The equation Hmc012-1.jpgPOmc012-2.jpg (aq)mc012-3.jpg 3KOH(aq) mc012-4.jpg Kmc012-5.jpgPOmc012-6.jpg(aq)mc012-7.jpg 3Hmc012-8.jpgO(l) is an example of which type of reaction?
a.
double-replacement reaction
c.
decomposition reaction
b.
combination reaction
d.
single-replacement reaction
 

 13. 
The equation 2Cmc013-1.jpgHmc013-2.jpgOH mc013-3.jpg 9Omc013-4.jpg mc013-5.jpg 6COmc013-6.jpg mc013-7.jpg 8Hmc013-8.jpgO is an example of which type of reaction?
a.
combustion reaction
c.
double-replacement reaction
b.
single-replacement reaction
d.
decomposition reaction
 

 14. 
A double-replacement reaction takes place when aqueous cobalt(III) chloride reacts with aqueous lithium hydroxide. One of the products of this reaction is ____.
a.
Co(OH)mc014-1.jpg
b.
Co(OH)mc014-2.jpg
c.
LiComc014-3.jpg
d.
LiClmc014-4.jpg
 

 15. 
If a combination/synthesis reaction takes place between rubidium and bromine, the chemical formula for the product is ____.
a.
RuBr
b.
Rbmc015-1.jpgBr
c.
RbBrmc015-2.jpg
d.
RbBr
 

 16. 
What is the driving force in the following reaction?
Ni(NOmc016-1.jpg)mc016-2.jpg(aq) mc016-3.jpg Kmc016-4.jpgS(aq) mc016-5.jpg NiS(s) mc016-6.jpg 2KNOmc016-7.jpg(aq)
a.
A gas is formed.
c.
Ionic compounds are reactants.
b.
A precipitate is formed.
d.
Ionic compounds are products.
 

 17. 
What type of compound is always an electrolyte?
a.
polar covalent
c.
ionic
b.
nonpolar covalent
d.
network solid
 

 18. 
An electric current can be conducted by ____.
a.
methane gas
c.
a salt solution
b.
a sugar solution
d.
rubbing alcohol
 

 19. 
An equation for the dissociation of an ionic solid shows
a.
the solid on the left side and aqueous ions on the right side.
b.
an aqueous solid on the left side and ions on the right side.
c.
aqueous ions on the left side and the solid on the right side.
d.
ions on the left side and an aqueous solid on the right side.
 

 20. 
Which of the following would form when Al(NO3)3(s) dissolves in water ?
a.
Al+ + (NO3)3–
c.
Al3+ + NO33–
b.
Al3+(aq) + 3NO3–(aq)
d.
Al3–(aq) + 3NO3+(aq)
 

 21. 
Which of the following would form when K2S(s) dissolves in water?
a.
2K+(aq) + S2–(aq)
c.
K2+(aq) + S2–(aq)
b.
K22+(aq) + S2–(aq)
d.
2K(aq) + S(aq)
 

 22. 
Which compound dissociates to produce the ions SO42–(aq) and NH4+(aq)?
a.
NH4SO4(s)
c.
NH4(SO4)2(s)
b.
(NH4)2SO4(s)
d.
(NH4)3(SO4)2(s)
 

 23. 
Which compound dissociates to produce the ions Ca2+(aq) and NO3–(aq)?
a.
CaNO3(s)
c.
Ca(NO3)2(s)
b.
Ca2NO3(s)
d.
Ca2(NO3)3(s)
 

 24. 
When solutions of two ionic compounds are combined and a solid forms, the process is called
a.
hydration.
c.
solvation.
b.
precipitation.
d.
dissociation.
 

 25. 
A precipitation is an example of what type of reaction?
a.
composition
c.
single-replacement
b.
decomposition
d.
double-replacement
 

 26. 
Which of the following pairs of solutions produce a precipitate when combined?
a.
Cu(NO3)2 and NaCl
c.
Cu(NO3)2 and K2CO3
b.
Fe(NO3)3 and MgCl2
d.
CaCl2 and NaNO3
 

 27. 
Which of the following is NOT a net ionic equation?
a.
Ag+(aq) + Cl–(aq) ® AgCl(s)
b.
Fe2+(aq) + 2Cl–(aq) + 2OH–(aq) ® Fe(OH)2(s) + 2Cl–(aq)
c.
3Ca2+(aq) + 2P3–(aq) ® Ca3P2(s)
d.
Cu2+(aq) + S2–(aq) ® CuS(s)
 

 28. 
What is the spectator ion in the equation
2Na+(aq)  + S2–(aq)+ Zn2+(aq) +  2NO3–(aq)® 2Na+(aq)+ 2NO3-(aq) + ZnS(s)?
a.
ZnS(s)
c.
S2–(aq)
b.
Na+(aq)
d.
none of the above
 

 29. 
What is the net ionic equation for the precipitation reaction between copper(II) chloride and sodium hydroxide?
a.
Cu2+(aq) + 2OH–(aq) ® Cu(OH)2(s)
b.
Na+(aq) + Cl–(aq) ® NaCl(s)
c.
Cu2+(aq) + 2OH–(aq) + 2Cl–(aq) ® Cu(OH)2(s) + 2Cl–(aq)
d.
Cu2+(aq) + 2Cl–(aq) + 2Na+(aq) + 2OH–(aq) ® Cu(OH)2(s) + 2NaCl(s)
 

 30. 
Which of the following is an ionic compound that dissociates in water?
a.
NaCl
b.
Cl2
c.
HCl
d.
C6H6
 

Matching
 
 
31 - 34 Match each item with the correct statement below.
a.
combination/synthesis reaction
c.
combustion reaction
b.
single-replacement reaction
d.
decomposition reaction
 

 31. 

 a reaction in which a single compound is broken down into simpler substances
 

 32. 

 a reaction in which oxygen reacts with another substance, often producing heat or light
 

 33. 

 a reaction in which 2 or more substances react to form one substance.
 

 34. 

 a reaction where one element switches places with another
 
 
35-37 Match each equation with its correct type
a.
acid-base reaction
c.
precipitation reaction
b.
single displacement
 

 35. 

 Ba(NOma035-1.jpg)ma035-2.jpg(aq) ma035-3.jpg Kma035-4.jpgSO4(aq) ma035-5.jpg BaSO4(s) ma035-6.jpg 2KNOma035-7.jpg(aq)
 

 36. 

 Hma036-1.jpgPOma036-2.jpg (aq)ma036-3.jpg 3KOH(aq) ma036-4.jpg Kma036-5.jpgPOma036-6.jpg(aq)ma036-7.jpg 3Hma036-8.jpgO(l)
 

 37. 

 Mg(s) ma037-1.jpg 2HCl(aq) ma037-2.jpg MgClma037-3.jpg(aq) ma037-4.jpg Hma037-5.jpg(g)
 



 
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