Lab Preparation of CO2 Quiz

Lab Preparation of CO2 Quiz revisits one of chemistry’s most memorable discoveries. In the mid 1700s, Joseph Black, a Scottish chemist, identified carbon dioxide as a unique gas distinct from ordinary air and called it “fixed air.” His finding explained why candles extinguish and why we exhale the same invisible substance during respiration. This simple yet profound discovery shaped the early understanding of gases and chemical reactions. Through this quiz, you’ll explore the basics of carbon dioxide gas preparation, the collection of carbon dioxide gas, and how laboratory experiments reveal fascinating links between everyday reactions and scientific insight.

Lab Preparation of CO2

Which solid substance reacts with dilute hydrochloric acid to produce carbon dioxide gas?

Sodium chloride

Magnesium oxide

Calcium carbonate

Zinc

What is the balanced chemical equation for the laboratory preparation of CO₂?

CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

CaCO₃ + HCl → CaCl₂ + CO₂

CaCO₃ + H₂SO₄ → CaSO₄ + CO₂

CaCO₃ + H₂O → CaO + CO₂

Which method is used to collect carbon dioxide gas?

Downward displacement of air

Over water

Through a drying tube

Upward displacement of air

Why is carbon dioxide not collected over water?

It forms an insoluble compound

It dissolves in water

It is lighter than water

It reacts with water

What is observed when dilute hydrochloric acid is added to marble chips?

The solution turns blue

A white precipitate forms

The reaction stops immediately

Effervescence occurs

Which drying agent cannot be used to dry carbon dioxide gas?

Calcium chloride

Phosphorus pentoxide

Concentrated sulfuric acid

Silica gel

Which drying agent is best for drying carbon dioxide gas?

Calcium chloride

Concentrated nitric acid

Potassium hydroxide

Sodium carbonate

In the laboratory preparation of CO₂, what is the purpose of the thistle funnel?

To collect gas

To allow controlled addition of acid

To dry the gas

To test the gas

What is the byproduct formed during the laboratory preparation of CO₂?

Water

Hydrogen

Oxygen

Calcium chloride solution

Why should the end of the delivery tube be kept below the level of acid during the reaction?

To prevent air entry

To increase pressure

To produce faster reaction

To maintain the gas temperature

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Sample Questions from This Quiz

Which solid substance reacts with dilute hydrochloric acid to produce carbon dioxide gas?
What is the balanced chemical equation for the laboratory preparation of CO₂?
Which method is used to collect carbon dioxide gas?
Why is carbon dioxide not collected over water?
What is observed when dilute hydrochloric acid is added to marble chips?

Try the full quiz and see how many of these you can answer!