BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

At 1 atm, liquid water is heated above 100°C. For this process, which of the following choices (i‒iv) is correct for ∆Ssurr? ∆S? ∆Suniv? Explain each answer.

i. greater than zero

ii. less than zero

iii. equal to zero

iv. cannot be determined

Interpretation Introduction

Interpretation: The correct choice, with respect to the given data, for ΔSsurr , ΔS and ΔSuniv is to be stated.

Concept introduction: The formula to calculate ΔSsurr is,

ΔSsurr=ΔHT

The formula to calculate ΔSuniv is,

ΔSuniv=ΔSsys+ΔSsurr

To determine: The correct choice, with respect to the given data, for ΔSsurr , ΔS and ΔSuniv .

Explanation

Explanation

 (i)

Heat is being added to the given system. Water is converted from the liquid state to a gaseous state. Hence, the entropy value increases, that is, the entropy of the product is more than that of the reactant. Hence, the value of ΔS will be positive.

(ii)

The formula to calculate ΔSsurr is,

ΔSsurr=ΔHT

Where,

  • ΔH is the change in enthalpy.
  • T is the temperature.

The value of ΔH for an endothermic reaction is positive.

Therefore, for an endothermic reaction ΔSsurr will be unfavorable or negative (less than zero)

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

Chapter 17 Solutions

Show all chapter solutions add

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

What is the difference between a molecular formula and a structural formula?

General Chemistry - Standalone book (MindTap Course List)

When the brain receives signals that enough food has been eaten, this is called. a. satiation b. ghrelin c. ada...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

What is physically exchanged during crossing over?

Human Heredity: Principles and Issues (MindTap Course List)