Chemistry 9th Edition

Published by Cengage Learning
ISBN 10: 1133611095
ISBN 13: 978-1-13361-109-7

Chapter 5 - Gases - Exercises: 84

Answer

The partial pressure of $H_2$ is 12.2 atm. The partial pressure of $He$ is 6.15 atm. The total pressure is 18.4 atm.

Work Step by Step

Partial Pressure of $H_2$ $1.00\text{ grams $H_2$}*\frac{1 \text{ mol $H_2$}}{2.01588\text{ grams $H_2$}}=0.496\text{ mol $H_2$}$ $P=\frac{nRT}{V}=\frac{0.496*0.08206*300}{1.00}=12.2\text{ atm}$ Partial Pressure of He $1.00\text{ grams $He$}*\frac{1 \text{ mol $He$}}{4.00260\text{ grams $He$}}=250\text{ mol $He$}$ $P=\frac{nRT}{V}=\frac{250*0.08206*300}{1.00}=6.15\text{ atm}$ Total pressure = 12.2 atm + 6.15 atm = 18.4 atm
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