Question

Look at the reaction below.

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

Answer 1

The acid is H2SO4(an)

Answer 2

Answer:
`H_2SO_4` is a acid.

Explanation: Acid is anything which donates
`H^+` ions and in this reaction
`H_2SO_4` is donating
`H^+` ions, therefore it is considered as an Acid.

This reaction is a type of reaction an acid undergoes that is when an acid reacts with metal it produces metal salt and hydrogen gas

`2HA(aq)+2M(s)\rightarrow 2MA(aq)+H_2(g)`

and the given reaction is

`H_2SO_4(aq)+Mg(s)\rightarrow MgSO_4(aq)+H_2(g)`

where,
`H_2SO_4` = Acid

Mg = metal

`MgSO_4` = Metal Salt

`H_2` = Hydrogen gas