Experiment to Investigate the Gas Pressure Law

Using a Bordon flask filled with air and connected to a pressure gauge and a temperature probe I investigate how gas pressure and temperature are related. This video shows the experiment layout and the collection of pressure and temperature data. In a video 2 ( • Gas Pressure and Tempe... ) I show how the data can be interpreted to find the mathematical relationship between pressure and temperature.
Try the data analysis yourself with the free worksheet available here: physicshq.wixs...
Perfect if you're learning physics at home.
Relevant concepts: gas pressure, gas temperature, psi and kPa conversion, celsius and kelvin conversion, direct proportionality, inverse proportionality, and testing for proportionality.
Experiments with gases, like this one, are mandatory practicals for many physics specifications. So this is good practice for OCR physics A, AQA A-Level physics, Edexcel A-Level physics, CPAC, PAG, practical endorsement.

[@aaliyahbobb-semple7505]

Thank u

[@markbobcat]

Good video bro :) i love physics

[@oli8344]

cheers used in a physics lesson

[@PhysicsHQ]

You’re welcome. Glad it proved useful.

[@rahimi5027]

May I ask.... Is there aspects in the apparatus set that can jeopardise the accuracy of the results of the experiment?

[@PhysicsHQ]

One thing that would be hard to quantify would be expansion of the bordon flask and pipe connecting it to the pressure gauge. The flask is immersed in the heated water which could lead to expansion. Expansion is a problem since the pressure law assumes a constant volume during the process.
Other factors that should be checked and resolved if necessary:
- Calibrate the pressure gauge. Not doing this could allow a zero error to go unnoticed.
- Calibrate the temperature probe.
- In the set up that I used for this experiment it was not possible to measure the temperature of the air directly. It was assumed that the air inside the flask was the same temperature as the surrounding water. That's almost certainly not the case. This would lead to an offset between my measurement and the real temperature - thus affecting accuracy.
Hope that helps.

[@madumoney_jackson07]

Write a possible investigate question

[@tortup]

what was this apparatus called again??

[@PhysicsHQ]

The glass container with the air inside is called a bordon flask