1.

Specific heat of a metal is 0.115 cal K^-1. If the weight percentage of metal in metal oxide is 77.28, determine the valency of metal.

Answer»

Hi there!

APPROXIMATE atomic mass of metal =

6.4 / specific HEAT = 6.4 / 0.115 = 55.65

In 100 g of metal oxide, weight of metal = 77.28 g

Weight of Oxygen = 22.22 g

w1 / w2 = E1 / E2

Equivalent weight of Oxygen = 8

Equivalent weight of metal = 77.28 / 22.22 × 8
= 27.82

VALENCY of metal = approximate atomic weight / equivalent weight
= 55.62 / 27.82
= 2

Hence, the valency of metal is 2.

Hope it helps!


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