[The Scientist (OP)]

What do you think? Thanks!

[Bored chemist]

Yes.

[Don_1]

Fair enuffski. Clear, concise and right to the point.

[Bored chemist]

I wondered why anyone asked the question.

[The Scientist (OP)]

What makes you think so Bored Chemist? Care to share? thanks!

[lightarrow]

What do you think? Thanks!

There are infinite. The reason is simple: mixing (miscible) liquids in different concentrations, you can get any value between the two liquids' boiling point. For example, if you want a liquid, different than water, which boils at 100°C, you only have to choose two miscible liquids which boiling pointa are, respectively, lower and greater than that of water, let's say n-buthilic alcohol (b.p. = 118°C) and ethilic alcohol (b.p. = 79°C) and you mix them in the appropriate percentages.

If instead you intended two pure compounds, then it depends on the precision required in the b.p. value: the greater the precision, the less compunds you can find with the same b.p. values.

[Geezer]

What do you think? Thanks!

There are infinite. The reason is simple: mixing (miscible) liquids in different concentrations, you can get any value between the two liquids' boiling point. For example, if you want a liquid, different than water, which boils at 100°C, you only have to choose two miscible liquids which boiling pointa are, respectively, lower and greater than that of water, let's say n-buthilic alcohol (b.p. = 118°C) and ethilic alcohol (b.p. = 79°C) and you mix them in the appropriate percentages.

If instead you intended two pure compounds, then it depends on the precision required in the b.p. value: the greater the precision, the less compunds you can find with the same b.p. values.

You can get even more if you alter the pressure  []

[Bored chemist]

What makes you think so Bored Chemist? Care to share? thanks!

This sort of thing.
Here are some vapour pressure vs temperature curves
http://www.mcallister.com/graphics/vapor4.jpg
Where the curves cross the two materials boil at the same temperature (and pressure).

[lightarrow]

http://www.mcallister.com/graphics/vapor4.jpg

What do ΣS or ΣP₄  mean?
                       ^S       

[imatfaal]

Guesswork - combinations (ie sums) of different isotopes or allotropes?  Although ∑Cs is far too low to be carbon.  Perhaps I should wait for BC to explain rather than guess

[lightarrow]

Guesswork - combinations (ie sums) of different isotopes or allotropes?  Although ∑Cs is far too low to be carbon.  Perhaps I should wait for BC to explain rather than guess

Cs is caesium  []

[imatfaal]

Of Course it is.  Doh I was reading it as many Carbons (ie one C, many Cs).  Caesium is pretty low mp/bp isnt it?

[lightarrow]

Of Course it is.  Doh I was reading it as many Carbons (ie one C, many Cs).  Caesium is pretty low mp/bp isnt it?

Yes (although I don't usually use it to cook spaghetti  [])

[Garfed]

Are infinite. The reason is simple: mix (mixed) in different concentrations of liquid, you can get between the two liquids' boiling point of any value...

[Geezer]

or, you can simply change the boiling point of any substance by altering its pressure. Pressure cookers are quite good at doing that.