Unit 2 AOS 2 - Volume-Volume Stoichiometry Quiz

What is the volume ratio of hydrogen to oxygen in the reaction 2H2 + O2 -> 2H2O?

• 1:2

• 3:1

• 2:1

• 4:2

In the reaction 2H2 + O2 -> 2H2O, if 10 liters of hydrogen gas react with excess oxygen, what volume of water vapor is produced?

• 15 liters

• 20 liters

• 10 liters

• 5 liters

How would you prepare 500 ml of a 0.1 M solution of sodium chloride?

• Dissolve 0.5 grams of sodium chloride in 500 ml of water.

• Dissolve 5.85 grams of sodium chloride in 500 ml of water.

• Dissolve 10 grams of sodium chloride in 500 ml of water.

• Dissolve 5.85 grams of sodium chloride in 1000 ml of water.

Explain the process of diluting a 2 M solution of hydrochloric acid to obtain a 0.5 M solution.

• Mix 2 parts of the 2 M solution with 1 part of water.

• Mix 1 part of the 2 M solution with 1 part of water.

• Mix 1 part of the 2 M solution with 3 parts of water.

• Mix 3 parts of the 2 M solution with 1 part of water.

What is the volume of 0.1 M sodium hydroxide required to neutralize 25 ml of 0.2 M hydrochloric acid?

• 5 ml

• 20 ml

• 30 ml

• 12.5 ml

In an acid-base titration, if 20 ml of 0.1 M sodium hydroxide is required to neutralize 25 ml of an unknown concentration of hydrochloric acid, what is the concentration of the hydrochloric acid?

• 0.2 M

• 0.08 M

• 0.05 M

• 0.15 M

Calculate the volume of 0.2 M sulfuric acid required to neutralize 50 ml of 0.1 M potassium hydroxide.

• 200 ml

• 100 ml

• 50 ml

• 150 ml

Explain the concept of standard solutions and their importance in volumetric analysis.

• Standard solutions are used as reference points for accurate measurements and to determine the concentration of unknown substances.

• Standard solutions are used to create experimental errors and inaccuracies

• Standard solutions are only important in qualitative analysis, not volumetric analysis

• Standard solutions are unnecessary and can be replaced by estimation and guesswork