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J & K CET Medical J & K - CET Medical Solved Paper-2002

  • question_answer
    In the reaction\[{{O}_{2}}(g)+{{N}_{2}}(g)2NO(g);\]\[\Delta H=80kJ\]. The decomposition of NO is favoured by:

    A)  increasing concentration of\[{{N}_{2}}\]

    B)  increase in pressure

    C)  increase in temperature

    D)  decrease in temperature

    Correct Answer: D

    Solution :

                    \[{{N}_{2}}(g)+{{O}_{2}}(g)2NO(g);\]\[\Delta H=+80\,kJ\] The reaction is endothermic. Hence, according to   Le-Chatelier   principle   increase   in temperature favours the formation of NO and therefore, the decomposition of NO is favoured by decrease in temperature.


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