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Gay Lussac's Law

A gas cylinde...

Question

A gas cylinder holds 80g of hydrogen gas. The same cylinder holds 400 g of gas X. Considering the same conditions of temperature and pressure in the cylinder, calculate the vapour density of gas X.

A

4

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B

3

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C

5

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D

2

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Solution

The correct option is C
5

Vapour density of a gas = $\frac{M a s s o f a c e r t a i n v o l u m e o f a g a s a t S T P}{M a s s o f a n e q u a l v o l u m e o f H_{2} a t S T P}$ = $\frac{400}{80}$ =5.

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