What is the relationship between the pressure and volume of a gas (assuming temperature is kept constant)?

When kept at a constant temperature, the pressure and volume of a gas are inversely proportional. This means that as one increases, the other decreases.


For example, if you decrease the volume of a container, then the pressure will increase.

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What is the formula that links the pressure and volume of a gas (assuming temperature is kept constant)?

pressure (𝜌) x volume (V) = constant (k)


𝜌V = k

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What is the formula that links the pressure and volume of a gas before and after a change in conditions (assuming temperature is kept constant)?

p1V1 = p2V2


p1 = initial pressure

V1 = initial volume


p2 = pressure after change occurs

V2 = volume after change occurs

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