Question

Analysis shows that nickel oxide has the formula Ni 0.98 O. What fraction of the nickel exist as Ni2+ and Ni3+.

Answer 1

Let Ni2+ = x and Ni3+ 98-x

2 x X + 3(98-x) +2= 0

Fraction of Ni2+ = 94/98 x 100 =95.9%

Fraction of Ni3+ = 4/98 x 100 =4.08%