Answer: Magnesium hydroxide, Mg(OH)2
Explanation:
2HC2H3O2(aq) + Mg(OH)2(aq) → Mg(C2H2O2)2(aq) + 2H2O(l)
Acid + base → Salt + Water.
The equation above is an example of an acid-base reaction where the acid, aqeous 2HC2H3O2 reacts completely with an appropriate amount of the base, aqueous Mg(OH)2 to produce salt, aqueous Mg(C2H2O2)2 and water, liquid H2O only.
This acid-base reaction is also known as neutralization reaction.