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15. Three gases are mixed in a cylinder. The total pressure in the cylinder is 456 mmHg. If

the hydrogen gas has a pressure of 230 mmHg, and the oxygen gas has a pressure of
148 mmHg, what is the pressure of the third gas, nitrogen?​

User Suren Raju
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1 Answer

5 votes

Answer:

78 mmHg is the partial pressure of the nitrogen.

Step-by-step explanation:

According to the Dalton's law, the total pressure of the gas is equal to the sum of the partial pressure of the mixture of gasses.


P=p_(1)+p_(2)+p_(3)

where,


P = total pressure of the gas mixture = 456 mmHg


p_(1) = partial pressure of hydrogen gas = 230 mmHg


p_(2) = partial pressure of oxygen gas = 148 mmHg


p_(3) = partial pressure of nitrogen gas = ?

Now put all the given values is expression, we get the partial pressure of the nitrogen gas i.e.
p_3 .


456 mmHg=230 mmHg+148 mmHg+p_3


p_3=456 mmHg-230 mmHg-148 mmHg=78 mmHg

78 mmHg is the partial pressure of the nitrogen.

User Owen Nelson
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