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

  • question_answer The rate of diffusion of hydrogen gas is [MH CET 2003; Pb. CET 2000]

    A)                 1.4 times to \[He\] gas  

    B)                 Same as \[He\] gas

    C)                 5 times to \[He\] gas     

    D)                 2 times to \[He\] gas

    Correct Answer: A

    Solution :

               We know that molecular mass of hydrogen \[{{M}_{1}}=2\] and that of helium \[{{M}_{2}}=4\], we also know that Graham's law of diffusion                                 \[\frac{{{r}_{1}}}{{{r}_{2}}}=\sqrt{\frac{{{M}_{2}}}{{{M}_{1}}}}=\sqrt{\frac{4}{2}}=\sqrt{2}=1.4\];  \[{{r}_{1}}=1.4m\]

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