JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Critical Thinking

  • question_answer
    For the reaction \[2N{{O}_{2}}_{(g)}\]⇌\[2N{{O}_{(g)}}+{{O}_{2}}_{(g)}\] \[{{K}_{c}}=1.8\times {{10}^{-6}}\] at 185°C. At 185°C, the value of \[{{K}_{c}}\] for the reaction \[N{{O}_{\left( g \right)}}+\frac{1}{2}{{O}_{2}}_{\left( g \right)}\]⇌\[N{{O}_{2}}_{\left( g \right)}\] is               [UPSEAT 2000]

    A)                 \[0.9\times {{10}^{6}}\]                

    B)                 \[7.5\times {{10}^{2}}\]

    C)                 \[1.95\times {{10}^{-3}}\]            

    D)                 \[1.95\times {{10}^{3}}\]

    Correct Answer: B

    Solution :

               Reaction is reversed and halved.                                 \[K=\sqrt{{1}/{1.8}\;\times {{10}^{-6}}}=7.5\times {{10}^{2}}\]


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