Question

In the sequence of reaction: $A\stackrel{K_1}{\to }B\stackrel{K_2}{\to }C\stackrel{K_3}{\to }D$, if $K_3$>$K_2$>$K_1$, the rate determining step of the reaction is:

• A. $A\to B$
• B. $C\to D$
• C. $B\to C$
• D. $A\to D$

Answer 1

The correct option is A $A\to B$

The slowest reaction is the rate-determining step.

Here, $K_1$ is the smallest.

So, the corresponding reaction is the rate-determining step, which is $A\to B$.