SATHEE: Chemical Kinetics - Result Question 36

Chemical Kinetics - Result Question 36

####36. For a first order reaction $A ⟶ B$ the reaction rate at reactant concentration of $0.01 M$ is found to be $2.0 \times 10^{- 5} m o l L^{- 1} s^{- 1}$ . The half life period of the reaction is

(a) $30 s$

(b) $220 s$

(d) $347 s$

[2005]

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Solution:

(d) Given $[A] = 0.01 M$

Rate $= 2.0 \times 10^{- 5} m o l L^{- 1} S^{- 1}$

For a first order reaction

Rate $= k [A]$

$k = \frac{2.0 \times 10^{- 5}}{[0.01]} = 2 \times 10^{- 3}$

$t_{1 / 2} = \frac{0.693}{2 \times 10^{- 3}} = 347 s e c$ .

Chemical Kinetics - Result Question 36

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Chemical Kinetics - Result Question 36

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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