Boiling point elevation- what am I doing wrong? braniacs, help!?

  • Thread starter Thread starter zenon zigs
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zenon zigs

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What is the boiling point of a solution that contains 1.25 mol CaCl2 in 1,400 g of water?

I set up Tb = Kb x m

Kb is a constant. The constant is .512

So it's Tb = (.512) (?)

MOLALITY= moles of solute/ kilograms of solution
MOLALITY= 1.25/1.4
=.89

Substitute back in
Tb= (.512) x (.89)

I get .4.....
The actual answer is 101.37

Where is my error. Can you show me how you solve?
 
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