Aim: To investigate on and determine the relationship between pressure and volume of a gas.

Hypothesis: As the pressure increases the gas's volume decreases.

Equipments: Clamp and retort stand, plunger, syringe, a rubber stopper, 5 chemistry textbooks "Exploring Chemistry" and a thick string.

Method: As per attached sheet "Experiment 4: Behaviour of Gases"

Set up:

Results:

Pressure, (books) Volume Reading 1, (mL) Volume Reading 2, (mL) Volume Reading 3, (mL) Average Volume Reading, (mL)

1. 51.9 50.5 48.7 50.4
2. 37.5 36.7 35.5 36.6
3. 32.9 31.7 31.2 31.9
4. 27.5 26.3 25.6 26.5
5. 23.5 22.0 20.6 22.0

Pressure in books Average volume, mL 1/V, Average (mL-1) Prssure due to Atmosphere (books) Total Pressure (books) Total Pressure x Volume

(books x mL)

1. 50.4 0.01984 2.2 3.2 161
2. 36.6 0.02732 2.2 4.2 154
3. 31.9 0.03135 2.2 5.2 166
4. 26.5 0.03774 2.2 6.2 164
5. 22.0 0.04545 2.2 7.2 158

Average Volume: 161±5 (books x mL)

Questions:

Some questions and regularities:

1. Pressure as observed in this experiment is the force exerted on the walls of the container made by the collision of the gas molecules on the container wall.
2. As we push the plunger down the volume available to the air molecules decreases hence the chance...