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  4. Rate constant has the unit m o l-2 L2 s-1, then order of reaction is

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Q. Rate constant has the unit $m o l^{-2} \,L^{2} \,s^{-1}$, then order of reaction is

Delhi UMET/DPMTDelhi UMET/DPMT 2007

Solution:

Unit of rate constant for nth order $=mol^{1-n}\, L^{n-1} \, s^{-1}$
For zero order $=mol\, L^{-1}\, s^{-1}$
First order $=s^{-1}$
Second order $=mol^{-1} \, L\, s^{-1}$
Third order $=mol^{-2} \, L^{2}\, s^{-1}$