
Concept explainers
(a)
Interpretation:
Conversion of 953 torr pressure into kPa has to be determined.
Concept Introduction:
Barometer is used for measurement of pressure of gas in atmospheric units (atm). Pressure can also be represented in many units such as torr, mm Hg, and pascal (Pa). These units can be related to one another as follows:
1 atm=760 torr=760 mm Hg=101325 Pa=101.325 kPa
(a)

Answer to Problem 3PE
Pressure 953 torr in kPa units is 127 kPa.
Explanation of Solution
Conversion factor to convert torr to kPa is as follows:
(101.325 kPa760 torr)
Pressure 953 torr can be converted to kPa as follows:
Pressure(kPa)=(953 torr)(101.325 kPa760 torr)=127 kPa
Hence 953 torr in kPa units is 127 kPa.
(b)
Interpretation:
Conversion of 2.98 kPa pressure into atm has to be determined.
Concept Introduction:
Refer to part (a).
(b)

Answer to Problem 3PE
Pressure 2.98 kPa in atm units is 0.0294 atm.
Explanation of Solution
Conversion factor to convert kPa to atm is as follows:
(1 atm101.325 kPa)
Pressure 1.12 atm can be converted to kPa as follows:
Pressure(atm)=(2.98 kPa)(1 atm101.325 kPa)=0.0294 atm
Hence 2.98 kPa in atm units is 0.0294 atm.
(c)
Interpretation:
Conversion of 2.77 atm pressure into mm Hg has to be determined.
Concept Introduction:
Refer to part (a).
(c)

Answer to Problem 3PE
Pressure 2.77 atm in mm Hg units is 2.11×103 mm Hg.
Explanation of Solution
Conversion factor to convert atm to mm Hg is as follows:
(760 mm Hg1 atm)
Pressure 2.77 atm can be converted to mm Hg as follows:
Pressure(mm Hg)=(2.77 atm)(760 mm Hg1 atm)=2.11×103 mm Hg
Hence 1.12 atm in mm Hg units is 2.11×103 mm Hg.
(d)
Interpretation:
Conversion of 372 torr pressure into atm has to be determined.
Concept Introduction:
Refer to part (a).
(d)

Answer to Problem 3PE
Pressure 372 torr in atm units is 0.489 atm.
Explanation of Solution
Conversion factor to convert torr to atm is as follows:
(1 atm760 torr)
Pressure 372 torr can be converted to atm as follows:
Pressure(atm)=(372 torr)(1 atm760 torr)=0.489 atm
Hence 372 torr in atm units is 0.489 atm.
(e)
Interpretation:
Conversion of 2.81 atm pressure into cm Hg has to be determined.
Concept Introduction:
Refer to part (a).
(e)

Answer to Problem 3PE
Pressure 2.81 atm in cm Hg units is 214 cm Hg.
Explanation of Solution
Conversion factor to convert atm to mm Hg is as follows:
(760 mm Hg1 atm)
Pressure 2.81 atm can be converted to cm Hg as follows:
Pressure(cm Hg)=(2.81 atm)(760 mm Hg1 atm)(1 cm Hg10 mm Hg)=214 cm Hg
Hence 2.81 atm in cm Hg units is 214 cm Hg.
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Chapter 12 Solutions
EBK FOUNDATIONS OF COLLEGE CHEMISTRY
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