   # How much energy is required to vaporize 125 g of benzene, C 6 H 6 , at its boiling point, 80.1 °C? (The heat of vaporization of benzene is 30.8 kJ/mol.) ### 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 19PS
Textbook Problem
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## How much energy is required to vaporize 125 g of benzene, C6H6, at its boiling point, 80.1 °C? (The heat of vaporization of benzene is 30.8 kJ/mol.)

Interpretation Introduction

Interpretation:

For a given mass of benzene amount of heat energy required to raise the temperature to its boiling point and then to vaporize has to be determined.

Concept Introduction:

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 of benzene =125g

Boiling point =80.10C

Heat of vaporization of benzene =30

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