(a)[5]
Copper(II) sulfate. This approach should rely on the reaction between an insoluble compound and a dilute acid.
(b)[4]
Silver chloride. This approach should use a precipitation reaction.
Chemistry 5070 · O Level · Preparation of salts
Preparation of salts — practice question
Salts may be made in the laboratory by several different methods.
Describe a suitable way to obtain a pure, dry sample of each named salt.
In your response, include the names of any techniques, apparatus and chemicals that are used.
Worked solution & mark scheme
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Place copper oxide / copper carbonate / copper hydroxide into the mixture” …
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