InterviewSolution
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InterviewSolution
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Which of the following statement `(s)` is/are correctA. The rate constant for the reaction `2N_(2)O_(5) rarr 4NO_(2)+O_(2)`, is `3.0 xx 10^(-5) s^(-1)`. If the rate is `2.40 xx 10^(-5) mol L^(-1) s^(-1)`, then the concentration of `N_(2)O_(5) = 0.8 mol L^(-1)`.B. In the intensity equation, `k = A exp (-E//RT)`. A may be termed as the rate constant at very low temperature.C. If `I` is the intensity of absorbed light and `c` is the concentration of `AB` for the photochemical process `AB+hv rarr AB^(**)`, the rate of formation of `AB^(**)` is diretly proportional to `I^(2)`.D. The rate constant, the activation energy, and the Arrhenius parameter of a chemical reaction at `25^(@)C` are `3.0 xx 10^(-4) s^(-1)`, `104.4 kJ mol^(-1)`, and `6.0 xx 10^(14) s^(-1)`, respectively. The value of the rate constant as `T rarr oo` is `6.0 xx 10^(14) s^(-1)`. |
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Answer» Correct Answer - A::D (a) `r = k[N_(2)O_(5)]` `2.40 xx 10^(-5) M s^(-1) = (3.0 xx 10^(-5) s^(-1))[N_(2)O_(5)]` `:. [N_(2)O_(5)] = 0.80 M` (b) At very high temperature or zero energy of activation. (c ) Directly proportional to `I`. (d) According to Arrhenius equation, `k = Ae^(-Ea//RT)` As `T rarr oo, :. K = A` Hence, `A = 6.0 xx 10^(14) s^(-1)` |
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