Chemistry 9-1 0971: Stoichiometry Topical Past Paper Questions
Cambridge IGCSE Chemistry 9-1 (0971) past-paper questions on Stoichiometry, free. This topic is frequently examined across 13 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
The salt zinc sulfate is prepared by adding excess solid zinc carbonate to dilute sulfuric acid. (a) Complete the equation for this reaction. $$ \mathrm{ZnCO_{3}}+\mathrm{H_{2}SO_{4}}\rightarrow\mathrm{ZnSO_{4}}+\mathrm{~}\cdots\cdots\cdots\cdots+\mathrm{}\cdots\cdots\cdots\cdots…
Eggshells are made from a mixture of calcium carbonate and other insoluble substances. Calcium carbonate reacts with dilute hydrochloric acid. The equation for the reaction is shown. $$ \mathrm{CaCO_{3}(s)}\mathrm{~+~2HCl(aq)}~\rightarrow~\mathrm{CaCl_{2}(aq)}~+\mathrm{H_{2}O(l)}…
Limes and lemons are citrus fruits which contain aqueous citric acid in their juice. Citric acid reacts with alkalis such as aqueous sodium hydroxide. Plan an investigation to find which of lime juice and lemon juice contains the most concentrated aqueous citric acid. Assume that…
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