Cambridge IGCSE Chemistry practice

Paper 4 structured question: Reversible reactions and equilibrium

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Paper

Marks

Topic

Reversible reactions and equilibrium

Exam-style question

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Paper 4Theory (Extended)1 marks

The Contact process is used in the industrial production of sulfuric acid.

Description

The reaction involves the conversion of sulfur dioxide to sulfur trioxide.

a
State the balanced equation for the conversion of sulfur dioxide to sulfur trioxide.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 4Theory (Extended)3 marks

Description

Understanding the reaction conditions and products is crucial for industrial applications.

a
State two conditions necessary for the Contact process to occur effectively.
Your answer
Aim for approximately 2 distinct marking points.
[2]
b
Identify the main product of the Contact process.
Your answer
Aim for approximately 1 distinct marking point.
[1]