Question

The rate of a certain reaction at different times are as follows:

Time	rate ($mole$ $li{t}^{-1}{\sec }^{-1}$)
I) 0	a) $2.8\times {10}^{-2}$
II) 10	b) $2.78\times {10}^{-2}$
III) 20	c) $2.81\times {10}^{-2}$
IV) 30	d) $2.79\times {10}^{-2}$

The correct matching is:

• A. zero order
• B. first order
• C. second order
• D. third order

Answer 1

The correct option is A zero order

At different times, the rate of the reaction is same.
Hence, the rate of the reaction is independent of time.
This is the characteristics of a zero order reaction.