Van't Hoff Eqn Question Watch

Superchemgirl
Badges: 1
Rep:
?
#1
Report Thread starter 4 years ago
#1
A piece of Na metal is placed into a chamber which is evacuated. The chamber is then heated to 900 K. The solid Na melts and partially evaporates to produce a vapour consisting of Na atoms and dimers. You are asked to calculate the pressure of both species above the molten metal:

(i) If the boiling point of Na is 1156 K, and the heat of vaporisation is
96.1 kJ mol-1, use the van’t Hoff relation to calculate the vapour pressure
(in bar) of Na atoms at 900 K.

No idea how I could just the Van't Hoff eqn to do this, not sure if I have to express something as a quotient of activities or something.. Don't know how to go about doing it at all! Please please please somebody help

Thank you!
0
reply
Pigster
Badges: 17
Rep:
?
#2
Report 4 years ago
#2
Question 1 should be: Why would you do such a thing? Don't you have better things to do on a Sunday afternoon?

Sorry, I couldn't be more (any) help.
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

University open days

  • University of East Anglia
    All Departments Open 13:00-17:00. Find out more about our diverse range of subject areas and career progression in the Arts & Humanities, Social Sciences, Medicine & Health Sciences, and the Sciences. Postgraduate
    Wed, 30 Jan '19
  • Solent University
    Careers in maritime Undergraduate
    Sat, 2 Feb '19
  • Sheffield Hallam University
    City and Collegiate Campus Undergraduate
    Sun, 3 Feb '19

Brexit: Given the chance now, would you vote leave or remain?

Remain (487)
79.97%
Leave (122)
20.03%

Watched Threads

View All
Latest
My Feed