1.

For the reaction RtoP, the concentration of a reactant changes from 0.03 M to 0.02 M in 25 minutes. Calculate the average rate of reaction using units of time both in minutes and seconds.

Answer»

Solution :Average rate `=-(Delta[R])/(DELTAT)=-([R]_(2)-[R_(1)])/(t_(2)-t_(1))=-(0.02" M"-0.030" M")/(25" MIN")=-(-0.01" M")/(25" min")=4xx10^(-4)" M min"^(-1)`
or `=-(-0.01" M")/(25xx60s)=6.66xx10^(-6)" Ms"^(-1)`


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