NEET Chemistry Metallurgy / धातुकर्म Question Bank Self Evaluation Test - General Principals and Process of Isolation of Elements

  • question_answer
    A coupled reaction takes place as follow-
    \[A+B\xrightarrow{{}}C+D\]     \[\Delta G{}^\circ =+xkj\]
    \[D+E\xrightarrow{{}}F\]            \[\Delta G{}^\circ =-ykj\]
    for the spontaneity of reaction
    \[A+B+E\xrightarrow{{}}C+F\], which of the following is correct?

    A) \[2x=y\]                       

    B) \[x<y\]

    C) \[x>y\]                         

    D) \[x=\left( y \right)\times T\Delta S\]

    Correct Answer: B

    Solution :

    [b] For a spontaneous reaction, \[\Delta G{}^\circ \] must be negative and it can be possible only in this case when \[x<y\]


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