GCSE / O Levels Chemistry

A student investigates the rate of reaction between calcium carbonate and hydrochloric acid.
calcium
carbonate
Pool
1
balance
2 measuring cylinder
3
stop-clock
A 1 and 2 only
°0
000/
-hydrochloric acid
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?
B 1 and 3 only C 2 and 3 only
D 1, 2 and 3

Rate of Reaction, Experimental Design | 2022 - M/J - 5070/12 | Q1