It explains how different reactions occur at varying rates due to factors such as the nature of reactants, surface area ... iron with oxygen, magnesium with hydrochloric acid, and the effects ...

Repeat step 2 with hydrochloric acid, place both boiling tubes in the boiling tube rack Add the magnesium strip to each boiling tube – ensuring that the Mg is fully immersed in the acid ...

An amazing effect of hydrochloric acid The ... "This was only possible because the surface was no longer covered in nickel sulfide." In principle, the acid treatment could apparently be used ...