For the reaction, `R to P`, the concentration of a reactant changes from 0.03 M to 0.02 M in 25 min. calculate the average rate of reaction using units of time both in minutes and seconds.

Explanation

For the reaction, `R to P`
Average rate of reaction
`= ("Change in concentration of reactant/product")/("Time taken")`
`= (Delta [R])/( Delta t) = - ([R_2] = [R_1])/( t_2 -t_1)`
`= -((0.02 - 0.03) M)/( 25 " min")`
`= ( 0.01 M)/( 25 "min" )4 xx 10^(-4)" mol L"^(-1)" min"^(-1)`
Converting unit of time in seconds
`= (4 xx 10^(-4) )/( 60)" mol L"^(-1)" s"^(-1)`
`= 6.66 xx 10^(-6)" mol L"^(-1)" s"^(-1)`