A student explores the rate of reaction between calcium carbonate and dilute hydrochloric acid.
Fig. 1.1 presents part of the apparatus used by the student.
The student finds the rate of reaction by measuring the volume of carbon dioxide given off in a set time.
(a)[1]
Name the apparatus labelled X.
(b)[3]
The student has put the delivery tube in the wrong place in the apparatus shown in Fig. 1.1.
Complete Fig. 1.2 so that it shows:
• the delivery tube in its correct position
• the remainder of the apparatus the student uses to collect and measure the volume of gas produced.
(c)[2]
During the first $2$ minutes, the student gathers $48.0\ \text{cm}^3$ of carbon dioxide.
Calculate the mean rate of reaction, in $\text{cm}^3/\text{s}$, during the first $2$ minutes.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Conical flask.” …