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CHAPTER 5 
GASES 
 
Problem Categories 
Biological: 5.38, 5.54, 5.100, 5.132, 5.142. 
Conceptual: 5.17, 5.18, 5.25, 5.26, 5.37, 5.79, 5.91, 5.92, 5.97, 5.99, 5.108, 5.109, 5.115, 5.116, 5.118, 5.122, 5.124, 
5.131, 5.141, 5.153, 5.155, 5.160. 
Descriptive: 5.95, 5.10a, 5.120, 5.125, 5.145. 
Environmental: 5.45, 5.53, 5.124, 5.130, 5.133. 
Industrial: 5.98, 5.117. 
 
Difficulty Level 
Easy: 5.13, 5.14, 5.19, 5.20, 5.21, 5.22, 5.23, 5.24, 5.25, 5.31, 5.32, 5.33, 5.34, 5.35, 5.36, 5.38, 5.39, 5.40, 5.41, 5.42, 
5.43, 5.44, 5.45, 5.47, 5.48, 5.51, 5.63, 5.66, 5.69, 5.77, 5.78, 5.79, 5.89, 5.90, 5.92, 5.97, 5.98, 5.116, 5.122, 5.138, 5.139. 
Medium: 5.17, 5.18, 5.26, 5.37, 5.46, 5.49, 5.50, 5.52, 5.53, 5.54, 5.58, 5.59, 5.60, 5.64, 5.65, 5.67, 5.68, 5.70, 5.80, 5.81, 
5.82, 5.83, 5.91, 5.93, 5.94, 5.95, 5.96, 5.99, 5.100, 5.101, 5.103, 5.104, 5.105, 5.106, 5.108, 5.113, 5.114, 5.115, 5.117, 
5.118, 5.120, 5.121, 5.123, 5.124, 5.126, 5.128, 5.130, 5.131, 5.134, 5.136, 5.137, 5.140, 5.141, 5.145, 5.146, 5.148, 
5.149, 5.150, 5.153, 5.155, 5.157, 5.158, 5.160, 5.162. 
Difficult: 5.55, 5.56, 5.57, 5.84, 5.102, 5.107, 5.109, 5.110, 5.111, 5.112, 5.113, 5.119, 5.125, 5.127, 5.129, 5.132, 5.133, 
5.135, 5.142, 5.143, 5.144, 5.147, 5.151, 5.152, 5.154, 5.156, 5.159, 5.161, 5.163. 
 
5.13 1 atm562 mmHg
760 mmHg
× = 0.739 atm 
 
5.14 Strategy: Because 1 atm = 760 mmHg, the following conversion factor is needed to obtain the pressure in 
atmospheres. 
 1 atm
760 mmHg
 
 
 For the second conversion, 1 atm = 101.325 kPa. 
 
 Solution: 
 1 atm606 mmHg
760 mmHg
= × =? atm 0.797 atm 
 
 101.325 kPa0.797 atm
1 atm
= × =? kPa 80.8 kPa 
 
5.17 (a) If the final temperature of the sample is above the boiling point, it would still be in the gas phase. The 
diagram that best represents this is choice (d). 
 
 (b) If the final temperature of the sample is below its boiling point, it will condense to a liquid. The liquid 
will have a vapor pressure, so some of the sample will remain in the gas phase. The diagram that best 
represents this is choice (b).