When you mix an acid (MgSO4) with a base (HCL), you should obtain a salt plus water.

A vigorous reaction will take place giving rise of heat as it is an exothermic reaction. If heat is applied then it should be more vigorous.

Reaction is as follows:

Mg(s) + HCl(aq) --> MgCl2(aq) + H2(g)

Magnesium reacts easily withHCl to produce H2 gas and magnesium ions, Mg2+, and heat. The reaction isexothermic, so it heats up quickly.

Mg(s) + HCl(aq) --> MgCl2(aq) + H2(g)

The net ionic equation :

Mg(s) + 2H+ --> Mg2+ + H2(g)

If water is removed from the solution then white crystals of Mgcl2 is formed.

Energy is produce as well as hydrogen is produce if the heat energy is hot enough the hydrogen will explode, magnesium is corroded into the hydrochloric acid leaving the aqueous state of magnesium chloride (MgCl2).

Balanced Equation:

MgSO4(s) + 2 HCl(aq) = MgCl2 + H2SO4(aq)