The vapor pressure of Substance X is measured at several temperatures:temperature9. °℃19. °℃29. °℃vapor pressure0.0462 atm0.0692 atm0.101 atmUse this information to calculate the enthalpy of vaporization of X.Round your answer to 2 significant digits. Be sure your answer contains a correct unit symbol.x10ロ・ロXμ

Answered: The vapor pressure of Substance X is…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The vapor pressure of Substance X is measured at several temperatures:
temperature
9. °℃
19. °℃
29. °℃
vapor pressure
0.0462 atm
0.0692 atm
0.101 atm
Use this information to calculate the enthalpy of vaporization of X.
Round your answer to 2 significant digits. Be sure your answer contains a correct unit symbol.
x10
ロ・ロ
X
μ

Expert Solution

Step 1

Given that, the vapour pressure of a substance X at different temperatures is

Temperature (°C)	Temperature (K)	Vapor pressure (atm)
9	(273+9) = 282	0.0462
19	(273+19) = 292	0.0692
29	(273+29) = 302	0.101

We have to calculate the enthalpy of vaporization of the X.

Formula: The required formula is $\ln \frac{P_{2}}{P_{1}} = \frac{∆ H}{R} (\frac{T_{2} - T_{1}}{T_{1} T_{2}})$ , where R is the universal gas constant = 8.314 J/mol.K.

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