Scribd
Upload
52 views4 pages

Review Questions

This document contains 10 review questions about limiting reactants and stoichiometry. It asks the reader to identify limiting reactants, calculate product amounts, and explain concepts like what defines a limiting reactant and the process for identifying one in a chemical reaction. It also contains questions that require using stoichiometry calculations and the limiting reactant concept to explain experimental observations and calculate unknown product amounts.

Uploaded by

Zai
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
52 views4 pages

Review Questions

This document contains 10 review questions about limiting reactants and stoichiometry. It asks the reader to identify limiting reactants, calculate product amounts, and explain concepts like what defines a limiting reactant and the process for identifying one in a chemical reaction. It also contains questions that require using stoichiometry calculations and the limiting reactant concept to explain experimental observations and calculate unknown product amounts.

Uploaded by

Zai
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 4

Review Questions

1. Calcium reacts with water. If a small piece is dropped into a beaker of water, which
reactant is in excess during this reaction?

Answer

2. If 47.2 mol of lead(II) oxide, PbO(s), reacts with 6 mol of oxygen according to the
equation below, which is the limiting reactant?

Answer

3. If 72.15 g of pentane, C5H12(g), reacts with 6.9 mol of oxygen, according to the
equation below, which is the limiting reactant?

Answer
4. In an experiment, 57.4 g of iron(III) chloride in solution reacts with 45.3 g of sodium
hydroxide in solution, as shown below.

FeCl3(aq) + 3NaOH(aq) → Fe(OH)3(s) + 3NaCl(aq)

1. Which reactant is the limiting reactant?

Answer

2. How much of the excess reactant remains after the reaction?

Answer

3. How much of each product forms?

Answer

5. Solid sodium metal reacts with chlorine gas to form table salt.

What is the minimum mass of chlorine gas that is required to consume 2.25 g of solid sodium?

Answer

6. Define the term “limiting reactant,” and give a specific example from your own
experience.
7. Using a numbered list of steps, explain the process of identifying the limiting
reactant in a chemical reaction.

8. A candle is burning at the bottom of a container. The container is then covered until
the candle is almost extinguished. When the cover is removed, the candle flame recovers and
burns normally again. Use stoichiometry and the concept of the limiting reactant to explain your
observations.

9. Copper reacts with nitric acid, HNO3(aq), as follows:

3Cu(s) + 8HNO3(aq) → 3Cu(NO3)2(aq) + 2NO(g) + 4H2O(ℓ)

What mass of nitrogen monoxide, NO(g), is produced when 50.0 g of copper reacts with 150.0 g
of nitric acid?

Answer
10. The following chemical equation represents the reaction of silver nitrate, AgN O 3
(aq), with sodium chloride:

AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)

Different amounts of silver nitrate are added to a fixed amount of sodium chloride. For each mass
of silver nitrate, the mass of sliver chloride, AgCl(s), precipitate is determined and plotted on the
graph below.

1. Why does the graph level off after 25 g of silver nitrate is added to the sodium chloride?

2. What amount in moles of sodium chloride is the fixed amount?

Answer

You might also like