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  • Tell me? A and B are two identical vessels. A contains 15 g Ethane at 1atm and 298 K. The vessel B contains 75 g of a gas X2 at same temperature and pressure. The vapour density of X2 is :

A and B are two identical vessels. A contains 15 g Ethane at 1atm and 298 K. The vessel B contains 75 g of a gas X2 at same temperature and pressure. The vapour density of X2 is : 

  • Option 1)

    75

  • Option 2)

    150

  • Option 3)

    37.5

  • Option 4)

    45

 

Answers (1)

best_answer

As we learnt in 

Avogadro’s Law -

Volume - mole relationship

- wherein

\frac{V_{1}}{n_{1}}= \frac{V_{2}}{n_{2}}

 

\frac{15}{30}= \frac{75}{M_{B}}

M_{B}= 150               

\left (V.D. \right )_{B}= \frac{150}{2}= 75


Option 1)

75

Correct

Option 2)

150

Incorrect

Option 3)

37.5

Incorrect

Option 4)

45

Incorrect

Posted by

prateek

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