Class 12 NEET Chemistry Chemical Kinetics Questions

[A]	[B]	Rate
x	y	R...(i)
x	2y	2R...(ii)
2x	2y	8R...(iii)

Let the rate of law;rate =k[A]a[B]b
From the data given,(x)a(y)b=R....(iv)
(x)a(2y)b=2R.....(v)
Dividing eqn. (v) by (iv),

(2y)b

(y)b

=

2R

R

or (2)b=2
Thus b=1
From data of (iii) experiment,(2x)a(2y)b=8R.....(vi)
From eqn. (v) and (vi),

(2x)a

(x)a

=

8R

2R

or (2)a=4
Thus a=2
By replacing the values of a and b in rate law;
rate=k[A]2[B]