States of Matter - Result Question 14

####14. 600 c.c. of a gas at a pressure of 750mm is compressed to 500 c.c. Taking the temperature to remain constant, the increase in pressure, is

(a) 150mm

(b) 250mm

(c) 350mm

(d) 450mm

[1995]

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Solution:

  1. (a) Given initial volume (V1)=600 c.c.; Initial pressure (P1)=750mm and final volume (V2)=500 c.c. According to Boyle’s law,

P1V1=P2V2

750×600=P2×500

or P2=750×600500=900mm.

Therefore increase in pressure =(900750)

=150mm



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