JEE Main & Advanced Chemistry States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव Question Bank Molecular speeds

  • question_answer
    The root mean square velocity of an ideal gas at constant pressure varies density  as       [IIT 2000]

    A)                 \[{{d}^{2}}\]      

    B)                 d

    C)                 \[\sqrt{d}\]        

    D)                 \[1/\sqrt{d}\]

    Correct Answer: D

    Solution :

                    \[U=\sqrt{\frac{3RT}{M}}=\sqrt{\frac{3PV}{M}}=\sqrt{\frac{3P}{d}}\therefore U\propto \frac{1}{\sqrt{d}}\]


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