Question

The non-stoichiometric compound Fe₀ 940 is formed when x% of Fe²⁺ ions are replaced by as many `2/3` Fe³⁺ ions. The value of x is

विकल्प

• 18

• 12

• 13

• 6

Answer 1

18

Explanation:

The number of Fe³⁺ ions replacing × Fe²⁺ ions

∴ Vacancies of cation = `1 - (2x)/3 = x/3` 

Both `x/3` = 1 – 0.94 = 0.06

∴ x = 0.6 × 3 = 0.18 or 18%.