EASY DALTONS LAW QUESTION!

Chemistry
Tutor: None Selected Time limit: 1 Day

A 1.00L flask is filled with 1.30g argon at 25*C. A sample of ethane vapor is added to the same flask until the total pressure is 1.450atm.

What is the partial pressure of argon in the flask?

What is partial pressure of ethane in flask?

3 s.f. units

Feb 1st, 2015

Partial pressure of Argon= nRT/V

n=1.3/40=0.0325 mol

T=25 C=298K

P=0.0325*0.0821*298/1

=0.795 atm

Partial pressure of ethene=Total pressure-partial pressure of Argon

=1.450-0.795

=0.655 atm

Feb 1st, 2015

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