Chapter 12: Q2. (page 398)

The hypothetical elementary reaction $2 A \to B + C$ has a rate constant of $10^{‐ 6} M^{‐ 1} s^{‐ 1}$ . What is the reaction velocity when the concentration of $A$ is $10 mM$ ?

Short Answer

Expert verified

The reaction velocity for the hypothetical elementary reaction $2 A \to B + C$ is 10^-10Ms^-1.

Step by step solution

Introduction

The pace of an elementary reaction is proportional to the frequency with which the reacting molecules come in contact with each other at a constant temperature. Thus, the rate constant of an elementary reaction can be used to calculate the reaction velocity.

Formula to calculate reaction velocity

For a bimolecular reaction, the reaction velocity is calculated as

v=k[A]²

Where

vis reaction velocity.

Kis reaction constant.

$[A]$ is the concentration of $A$ .

Calculation

It is given

Concentration of A=10mM (0.01M)

Rate constant=10^-6M^-1s^-1

On substituting the values,

v=k[A]²

=10^-6 x (0.010M)²

=10^-10Ms^-1

Thus, for the hypothetical elementary reaction, the reaction velocity is 10^-10Ms^-1.

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Substrate concentration (μM)	Reaction velocity (μM s⁻¹)
1	5
100	50

Set A	1/[S] (mM⁻¹)	1/v₀ (𝛍M⁻¹.s)
	0.5	2.4
	1.0	2.6
	1.5	2.9
	2.0	3.1

Set B	1/[S] (mM⁻¹)	1/v₀(𝛍M⁻¹.s)
	8	5.9
	10	6.8
	12	7.8
	14	8.7

The hypothetical elementary reaction $2 A \to B + C$ has a rate constant of $10^{‐ 6} M^{‐ 1} s^{‐ 1}$ . What is the reaction velocity when the concentration of $A$ is $10 mM$ ?

Short Answer

Step by step solution

Introduction

Formula to calculate reaction velocity

Calculation

One App. One Place for Learning.

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The hypothetical elementary reaction 2A→B+Chas a rate constant of 10‐6M‐1s‐1. What is the reaction velocity when the concentration of A is 10mM?

Short Answer

Step by step solution

Introduction

Formula to calculate reaction velocity

Calculation

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Biology Textbooks

Reproduction

Biological Organisms

Bioenergetics

Organ Systems

Cellular Energetics

Microbiology

Study anywhere. Anytime. Across all devices.

The hypothetical elementary reaction $2 A \to B + C$ has a rate constant of $10^{‐ 6} M^{‐ 1} s^{‐ 1}$ . What is the reaction velocity when the concentration of $A$ is $10 mM$ ?