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Chemical Reactions: Washing Soda and Sulphuric Acid

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Chemical Reactions: Washing Soda and Sulphuric Acid

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Questions and Answers

What is the primary gas produced during the reaction between washing soda and dilute sulfuric acid?

Hydrogen

Nitrogen

Carbon dioxide (correct)

Oxygen

What indicates that carbon dioxide is present when it bubbles through limewater?

The solution turns blue

The solution remains clear

The solution turns milky (correct)

The solution becomes colorless

What is formed when carbon dioxide reacts with limewater?

Sulfuric acid

Calcium hydroxide

Calcium carbonate (correct)

Sodium sulfate

What is the role of dilute sulfuric acid in this experiment?

<p>It reacts with washing soda to produce carbon dioxide (C)</p> Signup and view all the answers

Which chemical equation represents the reaction occurring in this experiment?

<p>Na₂CO₃ + H₂SO₄ → Na₂SO₄ + CO₂ + H₂O (C)</p> Signup and view all the answers

Study Notes

Chemical Reaction of Washing Soda and Sulphuric Acid

Washing soda (sodium carbonate) reacts with dilute sulphuric acid (H₂SO₄) to produce sodium sulphate, water, and carbon dioxide.
The reaction produces a colourless gas, carbon dioxide.
Carbon dioxide causes the limewater (calcium hydroxide) solution to turn milky, as calcium carbonate (a white precipitate) is formed.

Limewater and Carbon Dioxide

Limewater is a solution of calcium hydroxide.
When carbon dioxide gas bubbles through limewater, a white precipitate of calcium carbonate forms.
This makes the limewater appear milky.
The reaction shows that carbon dioxide is a chemical substance.

Chemical Equation

The chemical equation for the reaction between washing soda and dilute sulphuric acid is: Na₂CO₃ + H₂SO₄ → Na₂SO₄ + H₂O + CO₂
The chemical equation for the reaction between carbon dioxide and calcium hydroxide is: Ca(OH)₂ + CO₂ → CaCO₃ + H₂O

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Description

Explore the chemical reactions between washing soda and dilute sulphuric acid. This quiz covers the equations and products formed, including sodium sulphate, carbon dioxide, and the reaction with limewater. Test your understanding of these fundamental chemical processes and their visual indicators.