Question

Which of the following could represent units for the rate constant of a second-order reaction? Recommended time: 1 minute OMS1 OM151 Os1 OM-2.1 None of these M-2 to this answer

Answer 1

option 2 is correct. Hope your problem has been solved. Encourage my efforts through your valuable feedback. Thank you.

solution :- first we are going to find the unit of Rate of reaction. Rate of reaction is basically the change in concentration of any of reactant or product per unit time. Rate of change is concentration of reactant reaction time internal S where Ma unit of concentration ie is actually mol I s= unit of time ms-1 4 second order reaction can be represented as: rak [A]2 rak [A] [B Both leads to same result! they this Oh, K [A]2 is nothing but rate divided by square of concentration terms. or, K= MS-1 (M)2 K = Mols-1 Hence, unit of rate constant for a second- order reaction is MISI