Question
For a general reaction $$X \to Y,$$ the plot of conc. of $$X$$ vs time is given in the figure. What is the order of the reaction and what are the units of rate constant?
A.
$${\text{Zero,}}\,mol\,{L^{ - 1}}\,{s^{ - 1}}$$
B.
$${\text{First,}}\,mol\,{L^{ - 1}}\,{s^{ - 1}}$$
C.
$${\text{First,}}\,{s^{ - 1}}$$
D.
$${\text{Zero,}}\,L\,mo{l^{ - 1}}\,{s^{ - 1}}$$
Answer :
$${\text{Zero,}}\,mol\,{L^{ - 1}}\,{s^{ - 1}}$$
Solution :
$$\eqalign{
& {\text{For a zero order reaction,}} \cr
& {\text{rate}} = k = \frac{{dx}}{{dt}} \cr
& {\text{Units of}}\,\,k = mol\,{L^{ - 1}}\,{s^{ - 1}} \cr} $$