InterviewSolution
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InterviewSolution
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For the first order reaction `2N_(2)O_(5)(g) rarr 4NO_(2)(g) + O_(2)(g)`A. (a) The concentration of the reactant decreases exponentially with timeB. (b) the half-life of the reaction decreases with increasing temperatureC. (c ) the half-life of the reaction depends on the initial concentration of the reactantD. (d) the reaction proceeds to `99.6%` completion in eight half-life duration |
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Answer» Correct Answer - a, b, d For first order reaction `[A]=[A]_(0)e^(-kt)` Hence concentration of `[NO_(2)]` decreases exponentially. Also, `t_(1//2)=0.693/K`. Which is independent of concentration and `t_(1//2)` decreases with the increase of temperature. `t_(99.6)=2.303/K"log"(100/0.4)` `t_(99.6)=2.303/K(2.4)=8xx0.693/K=8t_(1//2)` |
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