Match List I with List II : List I (Order of reaction) List II (Unit of rate constant) A. Zero order I. mol ^ -1 \ L \ s ^ -1 B. First order II. mol ^ -2 \ L ^ 2 \ s ^ -1 C. Second order III. s ^ -1 D. Third order IV. mol \ L ^ -1 \ s ^ -1 Choose the correct answer from the options given below :
B. A-IV, B-III, C-I, D-II
The unit of rate constant k for an n-th order reaction is given by ( mol \ L ^ -1 )^ 1-n \ s ^ -1 . For zero order reaction (n=0): Unit = ( mol \ L ^ -1 )^ 1-0 \ s ^ -1 = mol \ L ^ -1 \ s ^ -1 (Matches A with IV) For first order reaction (n=1): Unit = ( mol \ L ^ -1 )^ 1-1 \ s ^ -1 = s ^ -1 (Matches B with III) For second order reaction (n=2): Unit = ( mol \ L ^ -1 )^ 1-2 \ s ^ -1 = mol ^ -1 \ L \ s ^ -1 (Matches C with I) For third order reaction (n=3): Unit = ( mol \ L ^ -1 )^ 1-3 \ s ^ -1 = mol ^ -2 \ L ^ 2 \ s ^ -1 (Matches D with II) Therefore, the correct matching is A-IV, B-III, C-I, D-II. Answer: A-IV, B-III, C-I, D-II
Related: Chemistry — Chemical Kinetics · All PYQ Banks