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JEE Main & Advanced Chemistry States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव Question Bank Critical state and Liquefaction of gases

  • question_answer
    The Vander Waal's parameters for gases W, X, Y and Z are
    Gas a (atm L2 mol?2) b (L mol?1?11?1?14545454)
    W 4.0 0.027
    X 8.0 0.030
    Y 6.0 0.032
    Z 12.0 0.027
                    Which one of these gases has the highest critical temperature

    A)                 W           

    B)                 X

    C)                 Y             

    D)                 Z

    Correct Answer: D

    Solution :

               For Z gas of given gases, critical temperature is highest                                                 \[{{T}_{c}}=\frac{8a}{27Rb}\] Þ \[{{T}_{c}}=\frac{8\times 12}{27\times .0821\times .027}=1603.98K\]


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