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Dalton's Law of Partial Pressures

At a constant...

Question

At a constant temperature, 250 mL of argon at 760 mm pressure and 600 mL of nitrogen at 500 mm pressure are put together in a one litre flask. Calculate the final pressure.

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Solution

$P_{1} V_{1} + P_{2} V_{2} = P_{m i x} V_{m i x} (At const. temperature) \Rightarrow (760) (250) + (500) (600) = (1000) P_{m i x} \Rightarrow P_{m i x} = 300 + 190 = 490 m m = Final Pressure$

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