FUNDAMENTALS OF BIOCHEMISTRY WPNG 1-SEME
FUNDAMENTALS OF BIOCHEMISTRY WPNG 1-SEME
5th Edition
ISBN: 9781119750192
Author: Voet
Publisher: WILEY
Question
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Chapter 12, Problem 1E

(a)

Summary Introduction

To calculate: The rate constant for the nonenzymatic elementary reaction AàB.

Concept introduction: The rate constant is the proportionality constant in an elementary reaction. The rate constant helps to quantify the rate of the reaction.

(a)

Expert Solution
Check Mark

Explanation of Solution

Calculation:

Given:

The nonenzymatic elementary reaction is AàB, where A is the reactant and B is the product.

The concentration of A = 20mM

The reaction velocity = 5µm of B/minute

The velocity of an instantaneous reaction is v=k[A]

where,

 v is the reaction velocity

 k is the reaction constant

 [A] is the concentration of A

The given values are substituted in the following rearranged equation for velocity of an instantaneous reaction,

k=v[A]=5μMmin-120mM=5×10-3mMmin-120mM=2.5×10-4min-1

   FUNDAMENTALS OF BIOCHEMISTRY WPNG 1-SEME, Chapter 12, Problem 1E

Conclusion

Conclusion: The rate constant for the nonenzymatic elementary reaction AàB is

2.5×10-4 min-1.

(b)

Summary Introduction

To determine: The molecularity of the given nonenzymatic elementary reaction AàB

Concept introduction: Molecularity of elementary reaction is defined as the total number of molecules or ions in the reaction that participate in the rate determining step.

(b)

Expert Solution
Check Mark

Explanation of Solution

Explanation: In the given reaction, there is only one rate determining step. Here, only one molecule of A is participating in the rate determining step. Therefore, molecularity is one.

Conclusion

Conclusion: The molecularity of the given nonenzymatic elementary reaction AàB is 1.

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Chapter 12 Solutions

FUNDAMENTALS OF BIOCHEMISTRY WPNG 1-SEME

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