Reactions of Dilute Sulphuric Acid

What gas is evolved when dilute sulphuric acid reacts with a reactive metal like magnesium?

What happens to lime water when carbon dioxide is passed through it?

Which gas evolved from the reaction of dilute sulphuric acid and a sulphide turns lead acetate paper black?

What gas is produced when dilute sulphuric acid is added to a carbonate such as sodium bicarbonate?

What is indicated by the evolution of a colourless gas that turns lime water milky and has a suffocating smell?

Dilute Sulphuric Acid Reactions

Reaction with metals:
- Dilute sulfuric acid reacts with reactive metals (e.g., magnesium, zinc, iron) to produce hydrogen gas.
- Effervescence (fizzing) occurs.
- The hydrogen gas produced produces a "pop" sound when ignited.
Reaction with carbonates/hydrogen carbonates:
- Dilute sulfuric acid reacts with carbonates or hydrogen carbonates to release carbon dioxide gas.
- The carbon dioxide gas turns limewater milky (cloudy).
- Carbon dioxide has no effect on acidified potassium dichromate paper.
Reaction with sulphides:
- Dilute sulfuric acid reacts with sulfides to produce hydrogen sulfide gas.
- Hydrogen sulfide has a foul (rotten egg) smell.
- Hydrogen sulfide turns lead acetate paper black.
Reaction with sulphites:
- Dilute sulfuric acid reacts with sulphites to produce sulfur dioxide gas.
- Sulfur dioxide has a suffocating, burning sulfur smell.
- Sulfur dioxide turns limewater milky (cloudy).
- Sulfur dioxide turns acidified potassium dichromate paper green.

Test your knowledge on the reactions of dilute sulphuric acid with various substances including metals, carbonates, sulfides, and sulphites. Explore how these reactions produce gases such as hydrogen, carbon dioxide, hydrogen sulfide, and sulfur dioxide, and understand the characteristics of each gas. This quiz will enhance your understanding of acid-base chemistry and gas identification.