A student investigated the rate of reaction between calcium carbonate and dilute hydrochloric acid.
They set up the apparatus shown in Figure 3 to collect and measure the volume of gas produced.

State the name of the piece of apparatus labelled Y in Figure 3.
Practise Edexcel GCSE Chemistry Rates of reaction with exam-style questions for Foundation and Higher tier. 166 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.