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While studying the decomposition of N_(2)O_(5)(g), it is observed that a plot of logarithm of its partial pressure versus time is linear. What kinetic parameter can be obtained from this ? |
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Answer» Solution :Considering as `1^(st)` ORDER reaction `k=(2.303)/(t)log_(10).(a)/((a-x))` `implieskt=2.303log_(10)a-2.303log_(10)(a-x)`…………`(1)` In terms of PRESSURE `a prop P_(0)` `(a-x) prop P` `K_(f)=2.303log_(10)P_(0)-2.303log_(10)P` or `log_(10)P=-(K)/(2.303)t+log_(10)P_(0)` Thus log `P` vs. time graph is linear with intercept EQUAL to `P_(0)` and SLOPE equal to `-(K)/(2.303)`. Since linear results are given DECOMPOSITION may be said `1^(st)` order. |
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