ORG CHEM CONNECT CARD
ORG CHEM CONNECT CARD
6th Edition
ISBN: 9781264860746
Author: SMITH
Publisher: MCG
bartleby

Concept explainers

Question
Book Icon
Chapter 6, Problem 50P
Interpretation Introduction

(a)

Interpretation: The validation of the given statement, “Increasing temperature increases reaction rate” is to be stated.

Concept introduction: According to Le Chatelier’s principle, equilibrium of the reaction shift towards the side that involves absorption of heat when the temperature is increased. The kinetic energy of molecules increases on increasing the temperature. It results in the faster rate of the reaction.

Interpretation Introduction

(b)

Interpretation: The validation of the given statement, “If a reaction is fast, it has a large rate constant” is to be stated.

Concept introduction: The rate constant is represented by k. It affects the rate of a reaction. Both the rate of a reaction and rate constant are directly related.

Interpretation Introduction

(c)

Interpretation: The validation of the given statement, “A fast reaction has a large negative ΔG° value” is to be stated.

Concept introduction: The change in Gibbs free energy, enthalpy and entropy is represented by ΔG°, ΔH° and ΔS° respectively. They are state functions. The relation of ΔG° with ΔH° and ΔS° is shown as,

ΔG°=ΔH°TΔS°

The change in Gibbs free energy describes the spontaneity of the reaction. The change in enthalpy describes the relative bond strength in the substance, whereas the change in entropy describes the randomness in the system.

Interpretation Introduction

(d)

Interpretation: The validation of the given statement, “When Ea is large, the rate constant k is also large” is to be stated.

Concept introduction: The activation energy (Ea) aids in determining the rate of the chemical reactions. The small value of Ea implies that less energy is required to convert the reactants into products, which further increases the rate of reaction.

Interpretation Introduction

(e)

Interpretation: The validation of the given statement, “Fast reactions have equilibrium constants >1” is to be stated.

Concept introduction: The change in Gibbs free energy is represented by ΔG°. It is a state function. The value of ΔG° depends on Keq. The free energy change is calculated as,

ΔG°=2.303RTlogKeq

If the ΔG° is greater than zero and Keq is smaller than one, then the formation of starting material is favored at equilibrium. However, if the ΔG° is smaller than zero and Keq is greater than one, the formation of product is favored at equilibrium. The equilibrium constant does not influence the rate of reaction.

Interpretation Introduction

(f)

Interpretation: The validation of the given statement, “Increasing the concentration of a reactant always increases the rate of a reaction” is to be stated.

Concept introduction: The concentration of a reaction influences the rate of a reaction. The increase in concentration of a starting material results in increase of the rate of a reaction.

Blurred answer
Students have asked these similar questions
Label each statement as true or false. Correct any false statement to make it true.a. Increasing temperature increases reaction rate.b. If a reaction is fast, it has a large rate constant.c. A fast reaction has a large negative ?G° value.d. When Ea is large, the rate constant k is also large.e. Fast reactions have equilibrium constants > 1.f. Increasing the concentration of a reactant always increases the rate of a reaction.
Label each statement as true or false. Correct any false statement to make it true. a. Increasing temperature increases reaction rate. b.If a reaction is fast, it has a large rate constant. c.A fast reaction has a large negative ΔGo value. d.When Ea is large, the rate constant k is also large. e. Fast reactions have equilibrium constants > 1. f.Increasing the concentration of a reactant always increases the rate of a reaction.
Label each statement as true or false. Correct any false statement to make it true. a. Increasing temperature increases reaction rate. b. If a reaction is fast, it has a large rate constant. c. A fast reaction has a large negative ΔG° value. d. When Ea is large, the rate constant k is also large. e. Fast reactions have equilibrium constants > 1. f. Increasing the concentration of a reactant always increases the rate of a reaction.

Chapter 6 Solutions

ORG CHEM CONNECT CARD

Knowledge Booster
Background pattern image
Chemistry
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Organic Chemistry
Chemistry
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:Cengage Learning
Text book image
Organic Chemistry: A Guided Inquiry
Chemistry
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Cengage Learning
Text book image
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Text book image
Living By Chemistry: First Edition Textbook
Chemistry
ISBN:9781559539418
Author:Angelica Stacy
Publisher:MAC HIGHER