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Standard XII

Chemistry

Dalton's Law of Partial Pressures

200 mL of N...

Question

200 mL of $N_{2}$ at $25^{o} C$ and 250 mm of Hg are mixed with 350 mL of $O_{2}$ at $25^{o} C$ and 300 mm of Hg in a vessel of capacity 300 mL. Calculate the final pressure of mixture at $25^{o} C$ .

326.0 mm Hg

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516.67 mm of Hg

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445.8 mm Hg

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608.0 mm of Hg

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Solution

The correct option is A 516.67 mm of Hg
If the gases are mixed at the same temperature

$P_{1} V_{1} + P_{2} V_{2} = P_{3} V_{3}$

$250 \times 200 + 300 \times 350 = P_{3} \times 300$

$P_{3} = 516.67$ mm of Hg.

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200 mL of N2 at 25oC and 250 mm of Hg are mixed with 350 mL of O2 at 25oC and 300 mm of Hg in a vessel of capacity 300 mL. Calculate the final pressure of mixture at 25oC.

The correct option is A 516.67 mm of HgIf the gases are mixed at the same temperature P1V1+P2V2=P3V3250×200+300×350=P3×300 P3=516.67 mm of Hg.

200 mL of $N_{2}$ at $25^{o} C$ and 250 mm of Hg are mixed with 350 mL of $O_{2}$ at $25^{o} C$ and 300 mm of Hg in a vessel of capacity 300 mL. Calculate the final pressure of mixture at $25^{o} C$ .

The correct option is A 516.67 mm of Hg
If the gases are mixed at the same temperature

$P_{1} V_{1} + P_{2} V_{2} = P_{3} V_{3}$

$250 \times 200 + 300 \times 350 = P_{3} \times 300$

$P_{3} = 516.67$ mm of Hg.