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Elevation in Boiling Point

If 500 mL of ...

Question

If 500 mL of a gas 'A' at 1000 torr and 1000 mL of gas B at 800 torr are placed in a 2 L container, keeping temperature same, what will be the final pressure (in torr)?

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Solution

Final pressure $= \frac{P_{1} V_{1}}{V} + \frac{P_{2} V_{2}}{V} = \frac{1000 \times 500}{2000} + \frac{800 \times 1000}{2000} = 650 torr$

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