Download presentation

Published byCael Pinks Modified over 4 years ago

1
Ch – Ideal Gases -Avogadro’s Law (extension) -STP & molar volume of gas (review) -Ideal Gas Law (most important)

2
Avogadro’s Law Equal volumes of gases contain equal numbers of molecules (moles) at constant temp & pressure true for any gas V n

3
**22.4 L Volume of Gas at STP At 1 atm and 273 K the volume of 1 mol**

According to Avogadro’s law, 1 mole of any gas will occupy the same volume as one mole of any other gas at the same temperature and pressure At 1 atm and 273 K the volume of 1 mol of gas is 22.4 L

4
Volume of Gas at STP

5
**PV=nRT P= pressure (atm) V=volume (L) n= number of moles**

Ideal Gas Law PV=nRT P= pressure (atm) V=volume (L) n= number of moles R=universal gas constant T=temperature in Kelvins

6
**PV = nRT (at STP and 1 mole)**

How do we get R PV = nRT (at STP and 1 mole) (1.0 atm)(22.4L) = (1 mole)(R)(273K) (1.0 atm)(22.4L) = R (1 mole)(273K)

7
**Universal Gas Constant R**

R = Latm/molK or R = J/molK

8
**Ideal Gas Law Problems P = ? atm n = 0.412 mol T = 16°C = 289 K**

Calculate the pressure in atmospheres of mol of He at 16°C & occupying L. GIVEN: P = ? atm n = mol T = 16°C = 289 K V = 3.25 L R = Latm/molK WORK: PV = nRT P(3.25)=(0.412)(0.0821)(289) L mol Latm/molK K P = 3.01 atm

9
Cool Down What pressure is exerted by mol of gas at 25 C if the gas is in a L container? P = 16.9 atm

Similar presentations

Presentation is loading. Please wait....

OK

Ideal Gas Law.

Ideal Gas Law.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google