Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

12 questions

SA-OC-EQ-0011 markL1 FoundationCalculatorEquilibrium

At dynamic equilibrium

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SA-OC-EQ-0021 markL1 FoundationCalculatorEquilibrium

Anhydrous copper(II) sulfate turns blue when

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SA-OC-EQ-0061 markL1 FoundationCalculatorIndustrial conditions

The catalyst in the Haber process is

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SA-OC-EQ-0121 markL1 FoundationCalculatorEquilibrium

The symbol

\rightleftharpoons

means

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SA-OC-EQ-0031 markL2 StandardCalculatorLe Chatelier

\mathrm{N_2+3H_2\rightleftharpoons2NH_3}

. Increasing pressure

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SA-OC-EQ-0041 markL2 StandardCalculatorLe Chatelier

For an exothermic forward reaction, increasing temperature

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SA-OC-EQ-0051 markL2 StandardCalculatorLe Chatelier

Adding a catalyst to an equilibrium mixture

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SA-OC-EQ-0071 markL2 StandardCalculatorIndustrial conditions

\mathrm{2SO_2+O_2\rightleftharpoons2SO_3}

, how many moles of gas are on the left-hand side?

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SA-OC-EQ-0101 markL2 StandardCalculatorLe Chatelier

Removing ammonia from the Haber equilibrium mixture

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SA-OC-EQ-0081 markL3 ExamCalculatorIndustrial conditions

The Haber process uses about

450\,^\circ\mathrm{C}

rather than a lower temperature because

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SA-OC-EQ-0091 markL3 ExamCalculatorIndustrial conditions

The Contact process runs at only

1

–

2

atm because

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SA-OC-EQ-0111 markL3 ExamCalculatorLe Chatelier

\mathrm{H_2(g)+I_2(g)\rightleftharpoons2HI(g)}

. Increasing pressure

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