Published by:
CGP EDU Academic Team
Published on: August 14, 2026
A + B –– → Product
For the above reaction following initial rates were given at various initial concentration
Initial conc. Initial conc. Rate in
of A ML–1 of B in ML–1 ML–1 S–1
0.1 0.1 0.05
0.2 0.1 0.1
0.1 0.2 0.05
Write the rate equation and determine the rate constant
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Sol. Let the order of reaction w.r.t. [A] be x and that w.r.t. [B] b y then rate equation r = k[A] x [B] y
From (i) & (ii) data
= 
. 
⇒ 
= 
⇒ x = 1
Now from (i) & (ii)
= 
. 
⇒ 1 = 
⇒ y = 0
∴ Rate equation
r = k[A]
From (i) data
0.05 = k (0.1)
⇒ k = 
= 
= 0.5 s –1
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