Question

A metal oxide is reduced by heating it in a stream of hydrogen. It is found that after complete reduction, 3.15 gram of the oxide have yielded 1.05 gram of the metal. We may deduce that:

• A. The atomic weight of the metal is 8
• B. The atomic weight of the metal is 4
• C. The equivalent weight of the metal is 4
• D. The equivalent weight of the metal is 8

Answer 1

The correct option is C The equivalent weight of the metal is 4

Eq. of metal = Eq. of oxygen
or $\frac{1.05}{E}=\frac{3.15-1.05}{8}$