Question

What information does the following equation convey Zn + H2SO4 = ZnHSO4 + H2 , Mg + 2HCl = MgCl2 + H2

Answer 1

both of these are single displacement reaction....as Reactivity of Zn and Mg is more than that of Hydrogen....so when Zn and Mg combines with H2SO4 they release H2

Answer 2

Hi friend...
:)

From these reaction we co.e to know that they are displacement reaction.

Hope this helps u....