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NEET AIPMT SOLVED PAPER 2003

  • question_answer
                    The reaction quotient (Q) for the reaction \[{{N}_{2}}(g)\,+3{{H}_{2}}(g)\] \[\rightleftharpoons \] \[2N{{H}_{3}}(g)\] is given by \[Q=\frac{{{[N{{H}_{3}}]}^{2}}}{[{{N}_{2}}]\,{{[{{H}_{2}}]}^{3}}}\] . The reaction will proceed towards right side if:                                                                                                     

    A)                 \[Q>{{K}_{c}}\]     

    B)                 Q = 0     

    C)                 \[Q={{K}_{c}}\]     

    D)                 \[Q<{{K}_{c}}\]

    Correct Answer: A

    Solution :

                    For reaction,                 \[{{N}_{2}}(g)+3{{H}_{2}}(g)\rightleftharpoons 2N{{H}_{3}}(g)\]                 Q (Quotient) = \[\frac{{{[N{{H}_{3}}]}^{2}}}{[{{N}_{2}}]\,{{[{{H}_{2}}]}^{3}}},\Delta n=2-4=-2\]                 At equilibrium Q is equal to \[{{K}_{C}}\] but for the progress of reaction towards right side \[Q>{{K}_{C}}\]                  where \[{{K}_{C}}\] is the equilibrium constant.


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