Difference between rate expression and rate …

*rea..n rate constant* Rea..n rate const... is a const.. of proportionality in rate law eq..n & is equal to the rate of rea..n when the molar conductance of each of the reactants is unity .......................................................................................... Eate const... is const... for a particular rea..n at a particular temp.. & does not depends upon the concentra..n of the reactants . ..........................................................................................unit depends on order of re..n 0th order : mol L^-1 s^-1 1st order : s^-1 2nd order : mol^-1 L sec^-1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *rate of re..n * It is the change in concentra..n of a reactant or product per unit time . ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This at any instance of time depends upon the molar concentra..n of the reactants at tht time . ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Unit : mol L^-1 time^-1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ???✌✌✌???

Rate expression tells us how the appearance /disappearance rates of reactants and products relate each other and rate constant is constant of proportionality that comes out of the rate law