The vapour pressure of water at 80°C is 355 mm of Hg. A 100mL vessel contains water saturated with O2 at 80°C, the total pressure being 760 mm of Hg. The contents of the vessel were pumped into a 50mL vessel at the same temperature. What is the partial pressure of O2 ?

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answer is 2.

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Detailed Solution

n , T are constant

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