The pressure and temperature of an ideal gas in a closed vessel are $720\, kPa$ and $40^oC$ respectively. If $\frac{1}{4}^{th}$ of the gas is released from the vessel and the temperature of the remaining gas is raised to $353^oC,$ the final pressure of the gas is ....... $kPa$
A$1440$
B$1080$
C$720$
D$540$
Medium
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B$1080$
b (b) ${P_1} = 720kpa,$ ${T_1} = 40^\circ C = 273 + 40 = 313K$
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