Chemistry · Oct / Nov 2017 · Paper 12 · Question 14

In an experiment, 1 mol of powdered copper and 1 mol of powdered zinc are placed in a flask. Dilute acid, containing 1 mol of acid, is added to the flask. The flask is left until all the reactions, if any, are complete. Which diagram shows the result of the experiment?

1. Acolourless neutral solution, 1 mol of copper
2. Bblue neutral solution, 0.5 mol of copper + 0.5 mol of zinc
3. Cblue neutral solution, 1 mol of zinc
4. Dcolourless acidic solution, 1 mol of copper + 1 mol of zinc

As printed in the paper