Review 04ANS
REVIEW QUESTIONS
Chapter 4
- The alcohol in "gasohol" burns according to the equation shown below:
How many grams of
- Ammonia burns in air according to the reaction shown below:
a) How many grams of NO form when
b) After the reaction above has completed, which reactant, and how much of it remains unreacted?
- When 30.0 g of benzene
and 65.0 g of bromine are reacted together as shown below, 56.7 g of bromobenzene ( ) is formed. What is the percent yield of this reaction?
- How many grams of solute are present in 50.0 mL of
solution?
- How many mL of
solution contains 5.00 g of solute?
- What volume of 1.50 M solution of sucrose solution is required to prepare 425 mL of 0.100 M solution?
- Glacial acetic acid has a density of
at . What is the molarity of a solution of acetic acid prepared by dissolving 10.00 mL of glacial acetic acid at in enough water to make 100.0 mL of solution?
- The acetylsalicylic content of aspirin can be determined by reaction of the acid with sodium hydroxide as shown below:
acetylsalicylic acid
23.0 mL of 0.0770 M NaOH solution was used to completely react with the acid present in a
23.0 mL of 0.0770 M NaOH solution was used to completely react with the acid present in a
- Concentrated nitric acid has a density of
and contains by mass. What is the molarity of this solution?
Assume 1.00 L of solution
- How many grams of Na must react with 155 mL of water to produce a solution that is 0.175 M NaOH , as shown below. (Assume a final solution volume of 155 mL )
- A sample of limestone (containing
) weighing 438 mg is treated with oxalic acid , as shown below:
The mass of
- Identify each of the following substances as a non-electrolyte (NE), weak electrolyte (WE), or strong electrolyte (SE):
a) HF WE
b)
c) LiOH - SE
d)
e)SE
f)
WE
NE - Complete each equation shown below:
a)
b)
c) - Complete the molecular equations shown below, and write balanced net ionic equations for each:
a)
b)
Note:
15. For each reaction shown below, determine if a reaction occurs. If so, write a balanced net ionic equation. If not, write "No Rxn".
a)
15. For each reaction shown below, determine if a reaction occurs. If so, write a balanced net ionic equation. If not, write "No Rxn".
a)
b)
c)
d)
d)
- Write balanced net ionic equations for each reaction described below:
a) Solid sodium hydroxide pellets are dropped in solution of sulfuric acid.
b) Aqueous solutions of ammonium carbonate and calcium chloride are mixed together.
- In the compounds below, assign oxidation numbers to the underlined element:
a)
b)
c)
d)
e)
g) - Identify which substance is oxidized and which substance is reduced in each of the following redox reactions.
a)
oxidized
reduced
oxidized
reduced
b)
oxidized
reduced
reduced
c)
Oxidized
19. A solution is prepared by mixing 0.10 L of 0.12 M NaCl and 0.23 L of
19. A solution is prepared by mixing 0.10 L of 0.12 M NaCl and 0.23 L of
- When
reacts with water, it forms boric acid ( ) and hydrogen gas. Boric acid combines with sodium oxide to form borate salt and water. What mass of is required to form 151 g of the borate salt by this reaction sequence? (Answer )
- Balance each oxidation or reduction half-reaction shown below:
a) _ _
b) _1
c) 2
b) _1
c) 2
d) 2
22. What is the overall equation formed from combining half-reactions (b) and (d) above?
22. What is the overall equation formed from combining half-reactions (b) and (d) above?
Combining the equations above and cancelling electrons,
- A person's blood alcohol
can be determined by titrating a sample of blood plasma with a sodium dichromate solution. The balanced equation is:
If 35.46 mL of
- Phosphoric acid can be produced by reaction of aqueous sodium phosphate and sulfuric acid. The other product in the reaction is sodium sulfate.
a) What volume (in mL ) of 1.55 M sulfuric acid is required to completely react with 27.5 mL of 1.20 M sodium phosphate?
b) What is the concentration of the phosphoric acid produced in the final solution?
Total volume of solution
Molarity of
Molarity of