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ScotlandChemistryQuick questions

Area 1: Inorganic and Physical Chemistry

Quick questions on Chemical equilibrium, weak acids and buffers - SQA Advanced Higher Chemistry

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Write the equilibrium constant expression for N2(g)+3H2(g)⇌2NH3(g)\text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g). [1 mark]
What is q2?
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State the effect of adding a catalyst on the position of an equilibrium. [1 mark]
What is q3?
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A weak acid has Ka=1.0×10−4K_a = 1.0 \times 10^{-4}. Calculate the pH of a 0.10 mol l−10.10 \text{ mol l}^{-1} solution. [2 marks]

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