Question

The equivalent mass of an element is 10 and its chloride has vapour density 91

Answer 1

Explanation:

For example:element is 4.Its chloride has a vapour density 59.25.Then the valency of the element is

(a)4(b)3(c)2(d)1

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A)

Mol.wt of chloride MCln=59.25×2=118.50

Suppose atomic mass of M=a

a+35.5n=118.5

Eq.mass=At.massValency

At.mas=E×n

Where n=valency (or) E×n+35.5n=118.5

Where E=4(given)

4n+35.5n=118.5

n=3