We can measure the rate of the reaction by measuring how fast the reaction produces hydrogen. This requires a conical flask and gas syringe. Zn + HCl → ZnCl 2 + H 2 ...

Conical flask with side arm, thistle funnel, delivery tube 3 gas jars with lids (or test tubes with stoppers) Basin/trough of water Test tube rack Calcium carbonate small pieces 3 g ...