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  • Help me understand! An open vessel at 270C 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 :

An open vessel at 270 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 :

  • Option 1)

    750 K

  • Option 2)

    750 oC

     

  • Option 3)

    500 oC

  • Option 4)

    500 K 

Answers (1)

best_answer

 

Ideal Gas Law in terms of density -

PM=d RT

- 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 \frac{2}{5} air escaped for vessel,\therefore \frac{3}{5} air reamain

in vessel.

P,V constant

n_{1}T_{1}=n_{2}T_{2}

n_{1}\left ( 300 \right )=\left ( \frac{3}{5}n _{1} \right )T_{2}\Rightarrow T_{2}=500K

 

 

-

 

 


Option 1)

750 K

Option 2)

750 oC

 

Option 3)

500 oC

Option 4)

500 K 
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