An open flask containing air is heated from `300K` to `500K`. What percentage of air will be escaped to the atmosphere, if the pressure is kept constant ?
A
80
B
40
C
60
D
20
Text Solution
Verified by Experts
The correct Answer is:
b
(b) `V_(1)=V, T_(1)=300K, T_(2)=500K,V_(2)=?` At constant pressure `V_(1)T_(2)=V_(2)T_(1)` `:. " "V_(2)=(V_(1)T_(2))/(T_(1))=(Vxx500)/(300)=(5V)/(3)` `:.` volume of air escaped =final volume - initial volume `(5V)/(3)-V=(2V)/(3)` `:.` % of air escaped `=(2V//3)/(5V//3)xx100=40"%"`
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