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A mixture of He, Ne, and Ar has a pressure of 14.9 atm at 28.0 °C. If the partial pressure of He is 1.43 atm and the partial pressure of Ar is 4.45 atm, what is the partial pressure of Ne?

Sagot :

Answer: The partial pressure of Ne is 9.02 atm.

Explanation:

Given: Total pressure = 14.9 atm

Partial pressure of He = 1.43 atm

Partial pressure of Ar = 4.45 atm

Partial pressure of Ne = ?

According to the Dalton's law of partial pressures the total pressure exerted by the a number of gases in a mixture is equal to the sum of partial pressures of each gas present in the mixture.

Now, for the given mixture the partial pressure of Ne is as follows.

Total pressure = Partial pressure of He + Partial pressure of Ar + Partial pressure of Ne

Substitute the values into above formula as follows.

Total pressure = Partial pressure of He + Partial pressure of Ar + Partial pressure of Ne

14.9 atm = 1.43 atm + 4.45 atm + Partial pressure of Ne

Partial pressure of Ne = 14.9 atm - 5.88 atm

= 9.02 atm

Thus, we can conclude that the partial pressure of Ne is 9.02 atm.