A student performed an experiment to measure
pressure and volume of a gas at constant
temperature and noted the following:
Pressure (mm of Hg) Volume (cm)
80
100
125
200
х
40
у
32
Calculate the value of x and y. Which law was
used in the calculations ? Draw a suitable graph.
(Ans. x = 64 cm", y = 250 mm)
A
volume of a gas
Answers
Answered by
14
Answer:
Boyle's law can be stated as, for a given mass of a gas the product of pressure and volume is always constant at constant temperature.
If P
1
,P
2
,P
3
,P
4
are pressures of a gas in states 1,2,3,4 and corresponding volumes are V
1
,V
2
,V
3
,V
4
at constant temperature, then according to Boyle's law, P
1
V
1
=P
2
V
2
=P
3
V
3
=P
4
V
4
i) P
1
V
1
=P
2
V
2
⟶ 100×80=125×x
∴x=
125
100×80
=64
ii) P
1
V
1
=P
4
V
4
⟶ 100×80=y×32
∴y=
32
100×80
=250
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