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The initial concentration of the first o...

The initial concentration of the first order reaction,`N_2O_(5(g))to2NO_(2(g))+1/2O_(2(g))`was `1.24xx10^(-2)molL^(-1)`.The concentration of N2O5 after ‘1’ hour was 0.20 x 10-2 mol L-1 Calculate the rate constant of the reaction at 300 K.

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For a first order reaction,(n=1)K=2.303/tlog` ([R_0])/([R])`
`=2.303/60`log`(1.24xx10^(-2))/(0.2xx10^(-2))`
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