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  • A vessel contains 1 mole of gas (molar mass 32) at temperature 7. The pressure of the gas is <img

A vessel contains 1 mole of \mathrm{O_2} gas (molar mass 32) at temperature 7. The pressure of the gas is \mathrm{p}. An identical vessel containing 1 mole of \mathrm{H_2} gas (molar mass 4) at temperature 27 has a pressure of
 

Option: 1

\mathrm{p/8}
 


Option: 2

\mathrm{p}


Option: 3

\mathrm{2p}


Option: 4

\mathrm{8p}


Answers (1)

best_answer

\mathrm{p V=n R T }

\mathrm{\Rightarrow p \propto n T \quad[\because V \text { and } R=\text { constants }] }

\mathrm{\Rightarrow \frac{p_2}{p_1}=\frac{n_2}{n_1} \times \frac{T_2}{T_1} \Rightarrow \frac{p_{\mathrm{He}}}{p}=\frac{1}{1} \times \frac{2 T}{T} }

\mathrm{\Rightarrow p_{\mathrm{He}}=2 p }

Hence option 3 is correct.



 

Posted by

sudhir.kumar

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