Salt Formation from Oxides

Q.
What salts are produced when you mix oxides with hydrochloric acid, sulphuric acid and nitric acid?
A.
The salts produced are chlorides from HCl, sulfates from H2SO4, and nitrates from HNO3 when the acid reacts with a metal oxide. Examples:

MgO + 2HCl ---> CaCl2 + H2O (magnesium chloride)

MgO + H2SO4 ---> CaSO4 + H2O (magnesium sulfate)

MgO + 2HNO3 ---> Mg(NO3)2 + H2O (magnesium nitrate)

==========