[mynameis]

“Halothane” is a common anesthetic inhalant used for surgical purposes.  The partial pressure of halothane in the lungs must be maintained within a critical range for successful anesthetization.  (Assume the desired partial pressure range is 4.0 torr - 8.0 torr.)  The halothane mol fraction = 0.010 in then lungs of a certain patient.  Is this within the target range?  (Assume operating room pressure to be 760 torr.)

a.   No, the mol fraction is too low; patient may wake.
b.   No, the mol fraction is too high; patient respiration is dangerously low.
c.   Yes, it is within the safe range, but on the high side.
d.   Yes, it is within the safe range, but on the low side.

[macman104]

You need to attempt it yourself.

Do you know about Raoult's Law?

[Borek]

That's just a direct application of partial pressure definition.

Raoult's law is about pressure over solution; this is not the case.

[macman104]

Ah, you are correct.  It was more an inaccuracy in my choice of words.  I suppose I should stop using Raoult's Law as a shortcut for the equation of P_i = x_i*P_total, as that's really what I associate Raoult's Law with (even though it's not entirely accurate).