(a) As the piston is not moving, this means that it is in equilibrium and hence

ID: 700635 • Letter: #

Question

(a)

As the piston is not moving, this means that it is in equilibrium and hence the internal pressure must be equal to the external pressure.

So,

Internal pressure = 105 Pa

(b)

Since the piston is free and the external pressure does not change, this means pressure remains constant.

Hence in the ideal gas equation:

PV = nRT

We have:

V/T = constant

Thus Volume is directly proprotional to Temperature, when Pressure is constant.

So, when the temperature is doubled, the volume will also be doubled.

So the piston will move to its left so that the volume is also doubled.

Hope this helps !

3. The figure below represents an ideal gas in a container with a moveable friction-free piston.

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