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Question
The water can be made to boil even at 0∘C if the pressure of surrounding is
The water can be made to boil even at 0∘C if the pressure of surrounding is
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Solution
The correct option is D 56 cm of Hg
The water can be made to boil even at 0∘C. As we know, the ideal equation for gases is pV=nRT. Now, if V and n are taken constants, p=cT, where c is a constant.So pressure is directly proportional to the temperature.Water boils at 100∘C or 373K at 1atm pressure. So, to obtain boiling at 0∘C or 273K, you need to reduce the pressure to 273×1373atm=0.732atm=56cm of Hg(approx).
The water can be made to boil even at 0∘C.
As we know, the ideal equation for gases is pV=nRT. Now, if V and n are taken constants, p=cT, where c is a constant.
So pressure is directly proportional to the temperature.
Water boils at 100∘C or 373K at 1atm pressure. So, to obtain boiling at 0∘C or 273K, you need to reduce the pressure to 273×1373atm=0.732atm=56cm of Hg(approx).
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