# An open vessel at 27o C is heated until two fifth of the air (assumed as an ideal gas ) in it has escaped from the vessel. Assuming that the volume of the vessel remains constant, the temperature at which the vessel has been heated is : (in K)

Ideal Gas Law in terms of density -

- wherein

where

d - density of gas

P - Pressure

R - Gas Constant

T - Temperature

M - Molar Mass

Saturated Vapour Pressure -

When equilibrium is attained between vapor and liquid kept in a partially filled beaker , the vapour pressure at that temperature is called saturated vapor pressure.

As we have learned in gaseous state

we know  air escaped for vessel, air reamain

in vessel.

P,V constant

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