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Q.

What is the valency of an element for which the equivalent weight is 12 and the specific heat is 0.266 cal/gm/K ?

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a

1

b

3

c

2

d

0.5

answer is A.

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Detailed Solution

According to Dulong - petit law
Specific heat x approximate atomic weight = 6.4

Approximate atomic weight = 6.40.266= 24
 Atomic weight of the element = 24
Equivalent weight of the element = 12

Valency = 2412=2
 

 

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