Answer to Question #113333 in General Chemistry for Naomi Sanders

Question #113333
A mixture of hydrogen, nitrogen, and water vapor has a total pressure of 864 mmHg.

The partial pressure of hydrogen is 220 mmHg and that of nitrogen is 410 mmHg.

What is the partial pressure of water vapor?
1
Expert's answer
2020-05-01T14:40:31-0400

As per Dalton's law of Partial pressure,

The total pressure of a mixture of gases is equal to sum of partial pressure of individual components of the mixture.

So,P=PH+PN+PWP=P_H+P_N+P_W

    864 mm=220 mm+410 mm+PW    \implies 864\ mm=220\ mm+410\ mm+P_W\implies PW=864630=234P_W=864-630=234 mm of Hg.


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