BCECE Engineering BCECE Engineering Solved Paper-2008

  • question_answer The following data are for the decomposition of ammonium nitrite in aqueous solution.
    Vol. of \[{{N}_{2}}\]in cc Times (min)
    6.25 10
    9.00 15
    11.40 20
    13.65 25
    35.65 Infinity
    The order of reaction is

    A) zero                      

    B)        one                       

    C) two                       

    D)        three

    Correct Answer: B

    Solution :

    For first order reaction, \[k=\frac{2.303}{t}\log \frac{a}{a-x}\] \[a\propto {{V}_{\infty }}(=35.05)\]and \[x\propto {{V}_{t}}.\] Constant values of fc calculated for different times, shows first order reaction.

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