3.5 Use of amount of substance in relation to volumes of gases

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Question 13

At room temperature and pressure (rtp), one mole of any gas occupies 24 dm³. Potassium chlorate decomposes completely when heated, according to the equation $2KClO3→2KCl+3O22\text{KClO}_3 \rightarrow 2\text{KCl} + 3\text{O}_2$ . The relative formula mass, $M_r$ , of potassium chlorate is 122.5.

Calculate the volume, in $dm3\text{dm}^3$ , of oxygen produced, measured at rtp, when 24.5 g of potassium chlorate decomposes.

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Markscheme

3.5 Use of amount of substance in relation to volumes of gases Questions

GCSE
Chemistry
3.5 Use of amount of substance in relation to volumes of gases

100 exam-style questions on AQA GCSE Chemistry 3.5 Use of amount of substance in relation to volumes of gases, covering 3.5.1 Volumes of gases. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank·3.5 Use of amount of substance in relation to volumes of gases