Chapter 9 Review

1. AgNO3 + H2SO4 Ag2SO4 +HNO3

What is the ratio of coefficients:

2 : 1 : 1 : 2

Is there a precipitate formed?

yes. Ag2SO4, rule #4.

What are the spectator ions?

H+ and NO3-

What is the net ionic equation?

2Ag+ + SO42- Ag2SO4

2. K2SO3(aq) K2O(aq) + SO2 (g)

What type of reaction is this?

Decomposition

What is the ratio of the coefficients?

1:1:1

Which compound(s) will dissolve in water?

K2SO3 and K2O

Which compound(s) is a gas?

SO2(g)

3. PbCl2 + Li2SO4 PbSO4 + LiCl

What type of reaction is this?

Double replacement

What are the ratio of coefficients?

No reaction

Is a precipitate formed?

No reaction

What symbol would be used to indicate for PbCl2?

(s)

4. Cl2 + KBr

What type of reaction is this?

Single replacement

Which activity series is used?

Nonmetal, Cl- replaces Br-

How would you write the gas of bromine?

Br2

What is the ratio of coefficients?

1:2:2:1

5. Al + Pb(NO3)3

Will this reaction take place?

Yes, Pb is less active than Al

What is the product?

Al(NO3)3 + Pb

Is there a precipitate?

yes? Pb is a metal and will fall out.

What is the ratio of coefficients?

1:1:1:1

6. (NH4)2SO4 + Ca(OH)2

What is the product?

NH4OH + CaSO4

What are the ratio of coefficients?

1:1:2:1

Is there a precipitate?

yes, CaSO4

What are the spectator ions?

NH4+ and OH-

7. The compounds and molecules that reforms in a chemical reaction is called:

ans: product

8. Characteristic of the produce is CO2 and water:

ans: combustion reaction

9. When two or more elements or compounds form a single product:

ans: synthesis or combination

10. When a compound like FeO or a ∆ symbol are seen over the ‘to yield’ arrow:

ans: catalyst

11. Ions that do NOT take part in the formation of precipitate in a reaction:

ans: spectator ions

12. The ONLY number in a balanced equation that can be changed:

and: coefficient

13. This is used in a single replacement reaction to determine if the reaction will proceed?

ans: activity series

14. Characterized by a compound + compound in the reactant:

ans: double replacement

15. What is leftover after the spectator ions are removed:

ans: net ionic equation

16. Characterized by having the same number and type of matter on both sides of the ‘to yield’ arrow:

ans: balanced equation

17. Given 2Fe3(PO3)2, the number of each element in this compound:

Fe

P

O

1. Aqueous solutions of lead (II) nitrate and ammonium chloride are mixed

2. Aqueous solution of aluminum chloride and sodium carbonate combine

3. Sulfuric acid reacts with sodium hydroxide

4. Sodium sulfide reacts with hydrochloric acid

1. If water is the product in the net ionic equation in an acid/base reaction, what does this tell you about the reaction?

2. What type of solution would you have if all the reactants and products were soluble?

3. Where would a net ionic reaction be useful? Hint spectator ions.