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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2003

  • question_answer
    For a reaction if \[{{K}_{p}}>{{K}_{c}}\], the forward reaction is favoured by :

    A)  low pressure

    B)  high pressure

    C)  high temperature

    D)  low temperature

    Correct Answer: A

    Solution :

    For a reaction, we know that\[{{K}_{p}}={{K}_{c}}\,{{(RT)}^{\Delta {{n}_{g}}}}\]where \[\Delta {{n}_{g}}=\] Number of gaseous moles of product - Number of gaseous moles of reactant Hence, if \[{{K}_{p}}>{{K}_{c}}\], then An must be positive. It means that there is a decrease in volume of reaction, hence low pressure will favour the forward reaction.


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