   Chapter 14.7, Problem 2.4ACP

Chapter
Section
Textbook Problem

Determine the activation energy for the reaction of H2 and I2 to produce HI, given the data in the table. Interpretation Introduction

Interpretation: The value of activation energy has to be given.

Concept introduction:

Arrhenius equation:

Arrhenius equation is used to calculate the rate constant of many reactions. Arrhenius equation takes the form

k=Ae-Ea/RT

Where,

k=rate constant

A=frequency factor

e=base of logarithms

Ea = energy of activation

T=Temperature

Mathematically, the above equation can be written as,

lnk=lnA-EaRT

Determination of activation energy: If the rate constant for a given reaction are measured at several temperatures, graphical techniques used to determine the activation energy of a reaction.

lnk =-(EaR)1T+lnA Equation for straight line:_lnkindicates y-axis.(EaR)indicates slope1T indicates x-axislnAindicates intercept.

Explanation

A graph of ln (k) versus 1/T, where T is in kelvins, yields a straight line with slope of -2.235×104K.  The activation energy is calculated as,

slope:=-2.235×104K (obtained  by a linear squares fit of the line by Microsoft Excel)Calculateactivationenergy:slope=-E

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

The smallest unit of life is the _____. a. atom b. molecule c. cell d. organism

Biology: The Unity and Diversity of Life (MindTap Course List)

How can you explain the Algol paradox?

Horizons: Exploring the Universe (MindTap Course List)

Draw the structure of the RNA dinucleotide 5 UG 3.

General, Organic, and Biological Chemistry 