Download presentation

Presentation is loading. Please wait.

Published byLillian McLaughlin Modified over 3 years ago

1
Todays lesson (Supplement only) Relate the change in volume of a gas to change in pressure applied to the gas at constant temperature and use the equation pV = constant at constant temperature.

2
Pressure in a gas What is origin of the pressure of a gas? Volunteers please!

3
Pressure in a gas Collisions of the gas particles with the side of a container give rise to a force, which averaged of billions of collisions per second macroscopically is measured as the pressure of the gas

4
Pressure and Volume at constant temp? http://phet.colorado.edu/en/sim ulation/gas-properties

5
pV = constant p 1 V 1 = p 2 V 2 (at constant temp) This is only true for a constant mass of gas at constant temperature.

6
Example Question A packet of crisps has a volume of 200 cm 3 at sea leveL (PRESSURE = 100 KPa). What volume will the packet have on the summit of Mount Everest (Pressure = 30 kPa)?

7
Example Question A packet of crisps has a volume of 200 cm 3 at sea leveL (PRESSURE = 100 KPa). What volume will the packet have on the summit of Mount Everest (Pressure = 30 kPa)? P 1 = 100 kPa, V 1 = 200 cm 3 P 2 = 30 kPa, V 2 = ?

8
Example Question A packet of crisps has a volume of 200 cm 3 at sea leveL (PRESSURE = 100 KPa). What volume will the packet have on the summit of Mount Everest (Pressure = 30 kPa)? P 1 = 100 kPa, V 1 = 200 cm 3 P 2 = 30 kPa, V 2 = ? P 1 V 1 = P 2 V 2 100x200 = 30V 2

9
Example Question A packet of crisps has a volume of 200 cm 3 at sea leveL (PRESSURE = 100 KPa). What volume will the packet have on the summit of Mount Everest (Pressure = 30 kPa)? P 1 = 100 kPa, V 1 = 200 cm 3 P 2 = 30 kPa, V 2 = ? P 1 V 1 = P 2 V 2 100x200 = 30V 2 20000 = 30V 2 V 2 = 20000/30 = 666 cm 3

10
pV = constant p 1 V 1 = p 2 V 2 (at constant temp) Can you answer the questions that Mr Porter is giving you? This is only true for a constant mass of gas at constant temperature.

Similar presentations

Presentation is loading. Please wait....

OK

The kinetic theory of gases and the gas laws

The kinetic theory of gases and the gas laws

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on shell scripting youtube Ppt on self awareness activity Ppt on teachers day celebration Ppt on social contract theory of citizenship Ppt on chemical change and physical change Ppt on pulse code modulation Seminar ppt on 3d password Ppt on johari window model+example Ppt on front office operation Ppt on magnetic refrigeration technology