Question

70gms of a metal oxide on reduction produced 54gms
of metal. The atomic weight of the metal is 81. What
is its valency?
Numeric Answer:​

Answer 1

Answer:

Total weight = 70g

Weight of metal = 54g

Weight of oxygen = 16g

Weight of metal/Equivalent mass of metal = Weight of oxygen/Equivalent mass of oxygen

54/M = 16/8

M = 27

Valency = Molar mass / Equivalent mass

V = 81/27

V= 3

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