A flask containing air (open to the atmosphere) is heated from 300 K to 500 K. The preccentage of air escaped to the atmosphere is

Options

A. A flask containing air (open to atmosphere ) is heated from 300 K to 500 K. The percentage of air escaped to the atmosphere is nearly
B. 16.6
C. 40
D. 60

Answer

B

Explanation

`V_(1)/T_(1)=V_(2)/T_(2), (V)/(300)=V_(2)/(500), V_(2)=(5)/(3)V =1.66 V`
Volume escaped =1.66 V-V = 0.66 V
`:.` Percentage of air escaped `=(0.66) V/(1.66) V xx 100 =40`