Chemistry 9-1 0971: Electricity and Chemistry Topical Past Paper Questions
Cambridge IGCSE Chemistry 9-1 (0971) past-paper questions on Electricity and Chemistry, free. This topic is frequently examined across 13 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
This question is about the effects of electricity on chemical substances. (a) Dilute aqueous sodium chloride decomposes when an electric current is passed through it. Graphite electrodes are used. The products are: - oxygen at the anode - hydrogen at the cathode. (i) Name the pro…
Nitric acid, $ \text{HNO}_3 $, and sulfuric acid, $ \text{H}_2\text{SO}_4 $, are strong acids. Ethanoic acid, $ \text{CH}_3\text{COOH} $, is a weak acid. (a) One mole of each acid is added separately to $ 1000\,\text{cm}^3 $ of distilled water to form a dilute solution. All three…
A teacher uses the apparatus shown in Fig. 1.1 to pass an electric current through molten mercury(II) bromide at a temperature of $ 300^{\circ}C $. Fig. 1.1 During the process shown in Fig. 1.1, the molten mercury(II) bromide breaks down and forms bromine and mercury. Table 1.1 s…
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