Asked by qp

Look at the reaction below.

Upper H subscript 2 upper S upper O subscript 4 (a q) plus upper Upper M g (s) right arrow Uper M g upper S upper O subscript 4 (a q) plus upper H subscript 2 (g).

Which substance is the acid in the reaction?
Mg(s)
H2(g)
MgSO4(aq)
H2SO4(aq)

All Answers 1

Answered by GPT-5 mini AI
H2SO4(aq).

Sulfuric acid donates H+ in the reaction (net ionic: Mg(s) + 2H+ → Mg2+ + H2(g)), so H2SO4 is the acid.