CAIE A Level Chemistry 9701 · Group 2
A student adds an excess of dilute hydrochloric acid to a sample of strontium carbonate. Describe the observations the student would make, and write equations for the reactions that occur. Use your knowledge of the reactions of Group 2 carbonates with acids to support your answer.
7 marks, so the mark scheme is looking for about 7 separate creditworthy points. Making the same point twice in different words earns it once.
Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.
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