Question

The following reaction takes place when aluminium powder is heated with MnO2

3MnO2+4Al 3Mn+2Al2O3+∆

(a)Is aluminium getting reduced?

(b)Is MnO2 getting oxidised?​

Answer 1

Answer:

a. No

b. No

Explanation:

Mn charge is 3 × +4 in reactant side.

Mn charge is 3 × +2 on product side.

therefore it gains 6 electrons or MnO2 is getting reduced.

Al charge is 4 × +3 on reactant side and on product side it is 2 × +3 . therefore it loses 6 electrons and Is getting oxidised