Chemistry 8462: The Rate and Extent of Chemical Change Topical Past Paper Questions
AQA GCSE Chemistry (8462) past-paper questions on The Rate and Extent of Chemical Change, free. This topic is frequently examined across 7 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
A student investigated the rate of the reaction between zinc and sulfuric acid. The equation for the reaction is $$ \mathrm{Zn(s)~+~H_{2}SO_{4}(aq)~\rightarrow~ZnSO_{4}(aq)~+~H_{2}(g)} $$ Figure 10 shows the apparatus. Figure 10 This is the method used. 1. Pour 50 cm $ ^{3} $ of…
This question is about reversible reactions. When 4.68 g of hydrated copper sulfate changes into anhydrous copper sulfate: - 2.99 g of anhydrous copper sulfate is produced - 1.47 kJ of energy is taken in from the surroundings. The equation for the reversible reaction is: hydrated…
This question is about the reaction between sodium thiosulfate solution and hydrochloric acid. When hydrochloric acid is added to sodium thiosulfate solution, the mixture gradually becomes cloudy. The equation for the reaction is: $$ \mathrm{Na}_{2}\mathrm{S}_{2}\mathrm{O}_{3}(\m…
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