   # You have a large balloon containing 1.0 mol of gaseous water vapor at 80 °C. How will each step affect the internal energy of the system? (a) The temperature of the system is raised to 90 °C. (b) The vapor is condensed to a liquid, at 40 °C. ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 5, Problem 70GQ
Textbook Problem
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## You have a large balloon containing 1.0 mol of gaseous water vapor at 80 °C. How will each step affect the internal energy of the system?(a) The temperature of the system is raised to 90 °C.(b) The vapor is condensed to a liquid, at 40 °C.

(a)

Interpretation Introduction

Interpretation:

The effect of the internal energy at the given condition has to be identified.

Concept Introduction:

The internal energy, U is the sum of kinetic energy and the potential energy inside the system.

Heat energy required to raise the temperature of 1g of substance by 1k.Energy gained or lost can be calculated using the below equation.

q=C×m×ΔT

Where,

q = energy gained or lost for a given mass of substance (m)

C =specific heat capacity

ΔT= change in temperature.

### Explanation of Solution

Given,

Mass=18.01528g/mol1mol =18g

ΔT=10K

C =1

(b)

Interpretation Introduction

Interpretation:

The effect of the internal energy at the given condition has to be identified.

Concept Introduction:

The internal energy, U is the sum of kinetic energy and the potential energy inside the system.

Heat energy required to raise the temperature of 1g of substance by 1k.Energy gained or lost can be calculated using the below equation.

q=C×m×ΔT

Where,

q = energy gained or lost for a given mass of substance (m)

C =specific heat capacity

ΔT= change in temperature.

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