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Chapter 19 Avogadro’s Principle.

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Presentation on theme: "Chapter 19 Avogadro’s Principle."— Presentation transcript:

1 Chapter 19 Avogadro’s Principle

2 Avogadro’s Principle Avogadro's Principle states that equal volumes of gases at the same temperature and pressure contain an equal number of particles.

3 Avogadro’s Principle T = 0°C = 273K P = 1 atm = 101.3 kPa = 760 torr
CO2 He T = 0°C = 273K P = 1 atm = kPa = 760 torr 1 mol V = ? 22.4L

4 The molar volume of a gas at STP.

5 1 mole of each gas at STP O2 CO2 He How many particles of gas are in each container? What would be the mass of each container? What would be the volume of each container? We now know three things about the mole.

6 1 mole of each at STP How many particles of H2O are in each container?
water water vapor ice How many particles of H2O are in each container? What would be the mass of each container? What would be the volume of each container?

7 The molar volume of a at STP.
gas 22.4 L

8 1 mole of each at STP How many particles of H2O are in each container?
water water vapor ice How many particles of H2O are in each container? What would be the mass of each container? What would be the volume of each container?

9 1 mole of each at STP How many particles of H2O are in each container?
water water vapor ice How many particles of H2O are in each container? What would be the mass of each container? What would be the volume of each container?

10 Mole Conversions

11 What is the volume of 200.0g of H2S gas at STP?

12 What is the volume of 200.0g of H2S gas at STP?
200.0g H2S =

13 What is the volume of 200.0g of H2S gas at STP?
200.0g H2S g

14 What is the volume of 200.0g of H2S gas at STP?
200.0g H2S mol g

15 What is the volume of 200.0g of H2S gas at STP?
200.0g H2S mol 34.1g

16 What is the volume of 200.0g of H2S gas at STP?
200.0g H2S mol 34.1g

17 What is the volume of 200.0g of H2S gas at STP?
200.0g H2S mol 34.1g mol

18 What is the volume of 200.0g of H2S gas at STP?
200.0g H2S mol L 34.1g mol

19 What is the volume of 200.0g of H2S gas at STP?
200.0g H2S mol L 34.1g mol

20 What is the volume of 200.0g of H2S gas at STP?
200.0g H2S mol L = 34.1g mol

21 What is the mass of 14.7L of CO2 at STP?
28.9 grams

22 How many molecules of CO2 are in 14.7L of the gas at STP?
3.95 x 1023 molecules

23 How many atoms are in 14.7L of CO2 gas at STP?
1.19 x 1024 atoms

24 Homework Mole-Volume Conversions Worksheet

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