Answered: Two volatile substances are mixed with…

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter10: Properties Of Solutions

Section: Chapter Questions

Problem 61E: Which of the following will have the lowest total vapor pressure at 25C? a. pure water (vapor...

See similar textbooks

Related questions

Concept explainers

Question

100%

Two volatile substances are mixed with one another so that the solution has a vapor pressure of 125 torr. Given the information in the table below, what is the mole fraction of substance A?

Substance A---> 87 torr

Substance B---> 210 torr

Expert Solution

Step 1

$T w o v o l a t i l e s u b s \tan c e s A a n d B m i x e d t o g e t h e r O v e r a l l s o l u t i o n' s v a p o u r p r e s s u r e, P_{t o t a l} = 125 t o r r V a p o u r p r e s s u r e o f s u b s \tan c e A = P_{A} = 87 t o r r V a p o u r p r e s s u r e o f s u b s \tan c e B = P_{B} = 210 t o r r T h e n f r o m, H e n r y' s l a w, P_{A} = x P_{t o t a l} [w h e r e x = m o l e f r a c t i o n o f (A)] T h e n m o l e f r a c t i o n o f s u b s \tan c e A = \frac{P_{A}}{P_{t o t a l}} = \frac{87 t o r r}{125 t o r r} = 0.696 ≃ 0.7$

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

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