Question

A gas mixture containing oxygen, nitrogen, and carbon dioxide has a total pressure of 32.5 kPa. If Po2 =

6.5 kPa and PN2 = 23.0 kPa, what is Pco2?
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Answer 1

A gas mixture containing oxygen, nitrogen, and carbon dioxide has a total pressure of 32.5 kPa.

The pressure for oxygen is 3 kPa

Step-by-step explanation:

According to Dalton's Law of Partial Pressure total exerted by the mixture of non-reacting gases is equal to sum of the partial pressure of each gas.

`P_(total)=P_(1)+P_(2)+P_(3)`

So,

For , a gas mixture containing oxygen, nitrogen, and carbon dioxide has a total pressure:

`P_(total)=P_{O_(2)}+P_{N_(2)}+P_{CO_(2)}`

`P_(total) = 32.5kPa`

`P_{O_(2)} = 6.5kPa`

`P_{N_(2)} = 23.0kPa`

Insert the values in :

`P_(total)=P_{O_(2)}+P_{N_(2)}+P_{CO_(2)}`

`32.5 kPa = 6.5 kPa + 23.0 kPa +P_{CO_(2)}`

`32.5 kPa = 29.5 kPa +P_{CO_(2)}`

`P_{CO_(2)}= 32.5 - 29.5`

`P_{CO_(2)}= 3kPa`