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An LPG cylinder when full contains 14.2 kg gas and exerts a pressure of 2.5 atm. If half of its gas is consumed, what will be the pressure of the gas inside the cylinder? |
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Answer» In a LPG cylinder, the gas is held as liquid. There is an equilibrium between the liquid LPG and its vapour. The equilibrium vapour pressure does not depend upon the quantity of liquid present there in as long as liquid = gas equilibrium is maintained. Therefore, even when half the gas has been used, the pressure exerted by the vapour of gas remains equal to 2.5 atmosphere. |
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