CAIE A-Level Physics A2 15.2.2 The Equation of State for an Ideal Gas Expressed As Pv Nrt Topic Practice

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Question 1

[Maximum number: 5]

Question (a)

(a)

An ideal gas has amount of substance n.

The gas is initially in state X , with pressure 2 p and volume V.
The gas is cooled at constant volume to state Y , with pressure p.
The gas is then heated at constant pressure to state Z , with volume 2 V .
Finally, the gas returns at constant temperature to state X .

[ 5 ]

Question (i)

(i)

Determine an expression for the temperature T of the gas in state X , in terms of n, p and V.
Identify any other symbols that you use.

[ 2 ]

Question (ii)

(ii)

On Fig. 4.1, sketch the variation with volume of pressure for the gas as the gas undergoes the three changes. The state X is labelled. Label states Y and Z .

Fig. 4.1

Fig. 4.1

[ 3 ]
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