Two flacks of equal volume connected by a narrow tube of negligible volume are filled with `N_(2)` gas. When both are immersed in boiling water, the gas pressure inside the system is `0.5 atm`. Calculate the pressure of the system when one of the flasks is immersed in an ice-water mixture keeping the other in boiling order.

Explanation

Temp. of the gas when both the flasks are immersed in boiling water`=100^(@)C=373" K"`.
Pressure=0.5 atm
Average temp. of the gas when one flask is immersed in ice and the other in boiling water
`=(0+100)/(2)=50^(@)C=323" K"`
As volume remains constant, `(P_(1))/(T_(1))=(P_(2))/(T_(2))`
`(0.5)/(373)=(P_(2))/(323) " or " P_(2)=(323)/(373)xx0.5=0.433" atm"`.