{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

GASES - MACROSCOPIC PPTY

# GASES - MACROSCOPIC PPTY - Gases Petrucci Harwood and...

This preview shows pages 1–4. Sign up to view the full content.

•1 CHEM 1000 3.0 Gases 1 Gases Petrucci, Harwood and Herring: Chapter 6 CHEM 1000 3.0 Gases 2 We will be looking at Macroscopic and Microscopic properties: – Macroscopic Properties of bulk gases • Observable Pressure, volume, mass, temperature… – Microscopic Properties at the molecular level Not readily observable Mass of molecules, molecular speed, energy, collision frequency CHEM 1000 3.0 Gases 3 Macroscopic Properties Our aim is to look at the relationship between the macroscopic properties of a gas and end up with the gas laws

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
•2 CHEM 1000 3.0 Gases 4 Pressure To contain a gas you must have a container capable of exerting a force on it (e.g. the walls of a balloon). This implies that the the gas is exerting a balancing force Normally we talk about the pressure (force/area) rather than force CHEM 1000 3.0 Gases 5 Measuring Pressure The simplest way to measure gas pressure is to have it balance a liquid pressure. Therefore we need to quantify the liquid pressure CHEM 1000 3.0 Gases 6 A h Consider a cylinder of liquid with area A and height h The force exerted at the bottom of the cylinder is its weight F = m.g The pressure exerted is P = F/A = m.g/A The density of the liquid is d=m/V and m = d.V but V=A.h So P = m.g/A = g.V.d/A = g.A.h.d/A = g.h.d
•3 CHEM 1000 3.0 Gases 7 Barometer To measure Atmospheric Pressure On the left the tube is open

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 10

GASES - MACROSCOPIC PPTY - Gases Petrucci Harwood and...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online