CHY 102 Lecture 5: Gases problem-Solution

• School: Ryerson University
• Department: Chemistry
• Course: CHY 102
• Professor: All

Document Summary

Sample a: 2. 50 l of h2 at 50 c and 750 mm hg. Sample b: 2. 16 l of co2 at -10 c and 1. 02 bar. Strategy: you know p, v, and t. calculate n using the ideal gas law. Whichever sample has more moles will also have more molecules, because moles and molecules are directly related via avogadro"s number. Remember to convert to k (not celsius), and use the correct ideal gas law constant r. if the units of pressure are in bar, then you should be using 0. 08314 l bar mol-1 k-1. If the units of pressure are in kpa, then you should be using 8. 314 l kpa mol-1 k-1 (and note that 1 l kpa = 1 j) Sample a: 1. 00 l of h2 at stp. Sample b: 1. 00 l of co2 at stp. Sample c: 1. 00 l of air at stp.