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JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Law of equilibrium and Equilibrium constant

  • question_answer
    In the gas phase reaction, \[{{C}_{2}}{{H}_{4}}+{{H}_{2}}\]⇌ \[{{C}_{2}}{{H}_{6}}\], the equilibrium constant can be expressed in units of [CBSE PMT 1992; Pb. PMT 1999]

    A)                 \[litr{{e}^{-1}}\,mol{{e}^{-1}}\] 

    B)                 \[litre\,mol{{e}^{-1}}\]

    C)                 \[mol{{e}^{2}}\,litr{{e}^{-2}}\]

    D)                 \[mole\,litr{{e}^{-1}}\]

    Correct Answer: B

    Solution :

    \[K=\frac{[{{C}_{2}}{{H}_{6}}]}{[{{C}_{2}}{{H}_{4}}]\,\,[{{H}_{2}}]}=\frac{[mole/litre]}{[mole/litre]\,\,[mole/litre]}\]                                     = litre/mole. or litre mole?1.


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