Question

A gas cylinder of half argon and half helium has a total pressure of 1.11 tour, what is the partial pressure of each gas?

Answer 1

Solution.

$$p = p1 + p2 = R*T/V*(n1+n2)$$

1.11 tour = 147.99 Pa

p = RT/V*(1/2+1/2) = RT/V

$$p1 = R*T*n1/V$$

p1 = 147.99*0.5 = 73.995 Pa

$$p2 = p-p1$$

p2 = 147.99-73.995 = 73.995 Pa

Answer:

p1 = 73.995 Pa

p2 = 73.995 Pa