CHEM 1AL Chapter Notes - Chapter 5: Gas Constant, Ideal Gas Law, Molar Volume

• School: UCSB
• Department: Chemistry and Biochemistry
• Course: CHEM 1AL
• Professor: V A N K O P P E N

Document Summary

The volume of one mole of a substance, or the volume per mole of substance. At stp, one mole of a gas occupies approximately 22. 4 l. Molar volume (l/mol) = molar mass (g/mol) / density (g/l) Absolute zero is 0 k = -273. 15 o c. Approximately true for all gases near atmospheric pressure and becomes increasingly accurate at low pressures. R is the universal gas constant = 0. 08206 l atm / mol k or 8. 314 j / mol k. Determine the molar volume of oxygen at stp and compare to the molar volume at stp of 22. 4 l. Decomposition reaction: 2h 2 o 2 (l) -> 2h 2 o (l) + o 2 (g) Is needed to speed up the reaction. Speeds up the reaction without being consumed in the reaction. Volume of oxygen gas produced = volume of water displaced.