Chemistry · May / June 2022 · Paper 12 · Question 1
A student investigates the rate of reaction between calcium carbonate and hydrochloric acid. [diagram of conical flask with calcium carbonate and hydrochloric acid, connected to a gas syringe] The volume of gas in the syringe is recorded after one minute. The experiment is repeated using different concentrations of hydrochloric acid. Which additional pieces of apparatus are essential for the investigation? 1 balance 2 measuring cylinder 3 stop-clock
- A1 and 2 only
- B1 and 3 only
- C2 and 3 only
- D1, 2 and 3
As printed in the paper
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Correct answer: D. 1, 2 and 3
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