Chemistry · Oct / Nov 2017 · Paper 12 · Question 21

Magnesium reacts with dilute sulfuric acid. Mg(s) + H2SO4(aq) → MgSO4(aq) + H2(g) Two experiments were carried out. experiment 1 24.0 g of magnesium was reacted with 100 cm3 of 1.0 mol / dm3 sulfuric acid. experiment 2 24.0 g of magnesium was reacted with 50 cm3 of 2.0 mol / dm3 sulfuric acid. In each experiment the volume of hydrogen was measured at various times. The results were plotted on a graph. Which graph is correct?

1. AGraph A
2. BGraph B
3. CGraph C
4. DGraph D

As printed in the paper