1.

In the decomposition of N_2O_5, the rate of reactionis-(d[N_2O_5])/(dt) = k [N_2O_5]. For determination of the units of k,

Answer»

UNITS of TIME are required
Units of CONCENTRATION are required
Units of both time and concentration are required
None of these

Solution :`("Conc")/("Time") = k "(Conc)"` . Hence , `k = (1)/("Time")` .


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