question_answer

Rate of the given reaction, (1) \[A+B\xrightarrow{{{r}_{1}}=0.05}X\] (2) \[X+B\xrightarrow{{{r}_{2}}=0.89}Y\] (3) \[Y+A\xrightarrow{{{r}_{3}}=0.001}AY\] (4) \[AY+B\xrightarrow{{{r}_{4}}=0.10}AYB\]will be determined by

A)  Step 1 : because the reaction starts with the formation of X

B)  Step 2 : because it is the fastest step

C)  Step 3 : because it is the slowest step

D)  Step 4 : because it ends the reaction