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For a chemical $Rx_n$ rate constant $K=5.3\times 10^{-4}mol\;L^{-1}S^{-1}$ what will be the order of the $Rx^n$?

$\begin{array}{1 1} 0 \\ 1 \\ 2 \\ 3 \end{array}$

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Answer: 0
The units of the rate constant depend on the global order of reaction:If concentration is measured in units of mol·L$^{−1}$ (sometimes abbreviated as M), then:
For a zero-order reaction, the rate coefficient has units of mol·L$^{−1}$·s$^{−1}$ (or M·s$^{−1}$), which are the same units that the rate coefficient in this question has.
Hence it is a zero-order reaction.
answered Dec 13, 2013 by sreemathi.v
edited Jul 25, 2014 by balaji.thirumalai

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