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

  • question_answer Which one of the following indicates the value of the gas constant R       [EAMCET 1989]

    A)                 1.987 cal K?1 mol?1           

    B)                 8.3 cal K?1 mol?1

    C)                 0.0821 lit K?1 mol?1          

    D)                 1.987 Joules K?1 mol?1

    Correct Answer: A

    Solution :

               8.31 J.K-1 mol?1                    1 cal = 4.2 J.                                 \[\therefore \frac{8.31}{4.2}cal.{{K}^{-1}}mo{{l}^{-1}}\] = 1.987 cal K?1 mol?1

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