The pressure on 100 cm3 of oxygen gas at 35°C is 750mm of Hg.What would be the volume of the gas if the pressure is increased to 1000mm of Hg without changing the temperature?
A.
133.3 cm3
B.
85 cm3
C.
75 cm3
D.
65 cm3
E.
58.3 cm3
Correct Answer: Option C
Explanation
P1 = 750MHg V1 = 100cm3 l2 = 308k
P2 = 100 mmHg V2 = ?
But (P1V1)/(T1) = ((P2V2)/(T2) i.e (750 x 100)/(308) = (1000 x )/(V2)/(308)
V2 = (750 x 1000 x 308)/(308 x 1000) = 75 cm3
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