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Lecture

10-4-12 End ch. 6 .docx

5 Pages
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Department
Chemistry
Course Code
CHEM 1161
Professor
Schlegel

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Ch. 6 Continued.. 10/04/2012 6.7 Volume and Moles Avogadro’s Law Avagadro’s Law the volume of a gas is directly related to the number if moles of gas T and P are constant V1/n1=V2/n2 STP Standard Temperature and Pressure The volumes of gases can be compared at STP, Standard Temperature and Pressure, when they have the same temperature, standard temperature (T), 0°C or273K the same pressure , standard pressure (P) , 1 atm (760 mmHg) Molar Volume At standard temperature and pressure (STP), 1 mole of a gas occupies a volume of 22.4 L, which is called  its molar volume. Use this equality as a conversion factor: At STP,22.4L = 1mole , 22.4L/1mole or 1 mole/22.4 L 6.8 Partial Pressure Dalton’s Law  Partial Pressure The partial pressure of a gas is the pressure that each gas in a mixture would exert if it were by itself in the  container  Dalton’s Law Dalton’s law of partial pressures indicates that pressure depends on the total number of gas particles, not on
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