Question

70 grams of metal oxide on reduction produced 54 grams of metal if atomic weight of metal is 81 valency is​

Answer 1

Answer:

3

Explanation:

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Answer 2

Given :

Mass of metal oxide = 70g

Mass of metal = 54g

Atomic weight of metal = 81

To find :

The Valency of the metal

Solution :

Total weight is 70g

Weight of metal is 54 g

Therefore, weight of oxygen = total weight - weight of metal

= (70-54)g

=16g

We know,

Weight of metal / equivalent mass of metal = weight of exygen / equivalent mass of oxygen

Therefore,54/M = 16/8

=> M =( 54 × 8)/ 16

M= 27 g/mol

We know ,

Valency = Molar mass / equivalent mass

= 81 / 27

= 3

THEREFORE, THE VALENCY OF THE METAL IS 3

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