Physical Chemistry: Thermodynamics, Structure, and Change

Published by W. H. Freeman
ISBN 10: 1429290196
ISBN 13: 978-1-42929-019-7

Foundations - Topic A - Matter - Exercises - Page 23: A.21(b)

Answer

PO2 = 58.11 atm PCO2 = 7.9 atm Ptotal = 66.02 atm

Work Step by Step

the gas law : PV =nRT the gas law : Ptotal = (nO2+ nCO2) RT / V P: is gas pressure ?? V: gas volume (100 cm3 = 0.1 L) R: gas constant (0.0821 L-atm / mole-K) T: gas temperature in Kelvin (283.15) PO2 = 58.11 atm PCO2 = 7.9 atm Ptotal = (nO2+ nCO2) RT / V = (0.25+0.034) × 0.0821 × 283.15 / 0.1 = 66.02 atm
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