May/June 2026 Paper 63

Name the item of apparatus labelled A in Figure 1.1.

State the general term used for the positive electrode, B, in Figure 1.1.

Give one observation, other than effervescence, during the electrolysis in Figure 1.1.

Suggest one change to the apparatus so the student can collect the gas made at electrode B in Figure 1.1.

Describe how the student can confirm that chlorine is made at electrode B in Figure 1.1.

Suggest one safety precaution the student must take when carrying out the experiment shown in Figure 1.1.