JEE Main & Advanced Chemistry States of Matter Question Bank Ideal gas equation and Related gas laws

  • question_answer The molecular weight of a gas which diffuses through a porous plug at 1/6th of the speed of hydrogen under identical conditions is       [EAMCET 1990]

    A)                 27          

    B)                 72

    C)                 36          

    D)                 48

    Correct Answer: B

    Solution :

                    \[{{r}_{g}}=\frac{1}{6}{{r}_{{{H}_{2}}}}\];  \[{{M}_{g}}={{M}_{{{H}_{2}}}}.{{\left[ \frac{{{r}_{{{H}_{2}}}}}{{{r}_{g}}} \right]}^{2}}=2\times {{6}^{2}}=2\times 36=72\]

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