CP14 Investigate the relationship between Pressure and Volume of a Gas Flashcards
1
Q
How?
A
Fixed mass of gas trapped in a sealed tube with fixed dimensions
Increase the pressure of the gas slowly using tyre pump
Measure the pressure and then wait 30 seconds to measure the temperature
Take at least 7 values
Repeat readings 3 times
Plot pressure against 1/volume
2
Q
Safety?
A
Wear safety goggles in case any of the tubing or bolts come lose
3
Q
How to reduce uncertainty?
A
Pressurise slowly to keep a constant temperature
Measuring the oil level at eye level
4
Q
What’s standard atmospheric pressure?
A
101kPa
5
Q
What equipment is used to measure the pressure?
A
The bourdon gauge
