Question

Part A Classify the following reactions as precipitation reactions, oxidation-reduction reactions, or acid-base reactions. Drag each item to the appropriate bin. Zn(s)+Ni2(aq)=Zn2+(aq)+Ni(s) Mg(OH)2(aq)+H2SO4(aq)=@H2O(1)+MgSO4(aq)

Answer 1

(1) 0       +2                +2         0

    Zn(s)+Ni²⁺(aq) Zn²⁺(aq)+Ni(s)

The oxidation state of Zn increases from 0 to +2 so it is an oxidation reaction.

The oxidation state of Ni decreases from +2 to 0 so it is an reduction reaction.

So it is an oxidation-reduction reaction.

       

(2) Mg(OH)₂(aq) + H₂SO₄(aq) H₂O(l)+MgSO₄(aq)

      base                acid

Here one acid reacts with a base , so it is an example for acid-base reaction.