Chemistry 5070 · O Level · Experimental design

Experimental design — practice question

Copper(II) carbonate is allowed to react with dilute sulfuric acid at room temperature. The reaction is represented by the word equation below. copper(II) carbonate + sulfuric acid $\rightarrow$ copper(II) sulfate + carbon dioxide + water Plan an experiment to find the volume of carbon dioxide produced when a known mass of copper(II) carbonate reacts completely with dilute sulfuric acid. Your plan should include common laboratory apparatus, dilute sulfuric acid and copper(II) carbonate. Do not use any other chemicals. Your plan should contain: • the apparatus required • the method to carry out and the measurements to record • ways to make the measured volume as accurate as possible. You may include a diagram to support your answer.
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Plan an experiment that will determine the volume of carbon dioxide formed when a known mass of copper(II) carbonate reacts completely with dilute sulfuric acid.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: chooses an appropriate named vessel for the reaction, for example a conical/Erlenmeyer flask, boiling tube or test-tube

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