The vanadium salt, $VOS{O_4}$, is soluble in water and reacts readily with powdered manganese in
dilute sulfuric acid.
The equation for the reaction is shown.
$Mn\left( s \right) + 2VOS{O_4}\left( {aq} \right) + 2{H_2}S{O_4}\left( {aq} \right) \to {V_2}{\left( {S{O_4}} \right)_3}\left( {aq} \right) + MnS{O_4}\left( {aq} \right) + 2{H_2}O\left( l \right)$
Which statement about this reaction is correct?
1 )
Hydrogen is oxidised in the reaction.
Manganese is the reducing agent in this reaction.
3 )
Sulfuric acid is the oxidising agent in this reaction.
4 )
The oxidation state of the vanadium changes from +5 to +3.
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