zinc foil gas syringe hydrochloric acid A piece of zinc foil was added to 50 cm³ of hydrochloric acid, of concentration 2.0 mol/dm³. The acid was in excess. The hydrogen evolved was collected in the gas syringe and its volume measured every minute. The results were plotted and labelled as graph 1. graph 2 (with copper) volume Knowing that copper does not react with hydrochloric acid. 1. What may be the role of copper? Explain your answer. 2 time graph 1 2. Can you take copper metal from reaction 2 and use it in another reaction? ​