Advertisements
Advertisements
Question
A gas at 240 K is heated to 127°C. Find the percentage change in the volume of the gas (pressure remaining constant).
Advertisements
Solution
Let volume = 100 ml
T = 240 K
Volume increased = x ml
New volume = 100 + x ml
T1 = 400 K
Using gas equation,
`"PV"/"T" = ("P"_1 "V"_1)/"T"_1`
`("P" xx 100)/240 = ("P"_1 xx(100 + "x"))/400`
1000 = 6(100 + x)
1000 = 600 + 6x
6x = 400
x = `400/6` = 66.6
Percentage increased = 66.6%
APPEARS IN
RELATED QUESTIONS
Explain Why?
Inflating a balloon seems to violate Boyle's law.
Give reasons for the following:
Inflating a balloon seems to violate Boyle's law.
561 dm3 of a gas at STP is filled in a 748 dm3 container. If the temperature is constant, calculate the percentage change in pressure required.
A certain amount of a gas occupies a volume of 0.4 litre at 17°C. To what temperature should it be heated so that its volume gets (a) doubled, (b) reduced to half, pressure remaining constant?
Give its
(i) mathematical expression
(ii) graphical representation and
(iii) significance.
A gas cylinder having a capacity of 20 litres contains a gas at 100 atmos. How many flasks of 200 cm3 capacity can be filled from it at 1 atmos. pressure if the temperature remains constant?
Calculate the following:
Calculate the temperature at which a gas ‘A’ at 20°C having a volume, of 500 cc. will occupy a volume of 250 cc.
Calculate the following:
A gas ‘X’ is collected over water at 17°C and 750 mm. pressure. If the volume of the gas collected is 50 cc., calculate the volume of the dry gas at s.t.p. [at 17°C the vapour pressure is 14 mm.]
Fill in the blank with the correct word, from the words in option:
1 dm3 of a gas is equal to _______.
Calculate the coefficient of cubical expansion of a zinc bar. Whose volume is increased 0.25 m3 from 0.3 m3 due to the change in its temperature of 50K?
