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Find the pressure of the elements.

  • #1
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Homework Statement


A compound of ether (0.287 g) and chloroform (0.568 g) evaporates in the temperature 373 K in an empty container with volume 0.0001m3. Find the pressure of each element. I don't know which formula of ether should I use since there are many. However even if I knew the n of moles for example n I would do these actions: pV=nRT. Since the T is the same: T=p1V1/n1R=p2V2/n2R=> 373=p1x/n1=p2(0.0001-x)/n2. What should I do next?

Homework Equations


pV=nRT

The Attempt at a Solution


I don't know which formula of ether should I use since there are many. However even if I knew the n of moles for example n I would do these actions: pV=nRT. Since the T is the same: T=p1V1/n1R=p2V2/n2R=> 373=p1x/n1=p2(0.0001-x)/n2. What should I do next?
 

Answers and Replies

  • #2
SteamKing
Staff Emeritus
Science Advisor
Homework Helper
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1,666

Homework Statement


A compound of ether (0.287 g) and chloroform (0.568 g) evaporates in the temperature 373 K in an empty container with volume 0.0001m3. Find the pressure of each element. I don't know which formula of ether should I use since there are many. However even if I knew the n of moles for example n I would do these actions: pV=nRT. Since the T is the same: T=p1V1/n1R=p2V2/n2R=> 373=p1x/n1=p2(0.0001-x)/n2. What should I do next?

Homework Equations


pV=nRT

The Attempt at a Solution


I don't know which formula of ether should I use since there are many. However even if I knew the n of moles for example n I would do these actions: pV=nRT. Since the T is the same: T=p1V1/n1R=p2V2/n2R=> 373=p1x/n1=p2(0.0001-x)/n2. What should I do next?
You can roll the dice and assume the problem is talking about diethyl ether, which is the compound commonly referred to when talking about "ether":

http://en.wikipedia.org/wiki/Diethyl_ether

Like chloroform, ether was once used as an anesthetic.
 
  • #3
44
0
You can roll the dice and assume the problem is talking about diethyl ether, which is the compound commonly referred to when talking about "ether":

http://en.wikipedia.org/wiki/Diethyl_ether

Like chloroform, ether was once used as an anesthetic.
ok, but what should I do next?
 
  • #6
Borek
Mentor
28,441
2,837
Just treat each substance separately, as if there were no other present. That's how gases behave (and that's what partial pressures are about).
 

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