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