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Topic: colligative properties help  (Read 3469 times)

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Offline liltiger28

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colligative properties help
« on: January 29, 2009, 05:40:12 AM »
cant figure out these questions.

1) what mass of CsBr must be added to .500 L of water (d= 1.0 g/mL) to produce a .400 m solution?

2) the boiling point of ethanol (C2H5OH) is 78.5 Celsius. what is the boiling point of a solution of 6.4 g of vanillin (M = 152.14 g/mol) in 50.0 g of ethanol. (Kb = 1.22 Celsius/m)

anything helps! thanks
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Offline sjb

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Re: colligative properties help
« Reply #1 on: January 29, 2009, 07:39:57 AM »
What is the definition of a 1m solution?
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Offline Donaldson Tan

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Re: colligative properties help
« Reply #2 on: January 29, 2009, 10:00:46 AM »
Forum Rules dictate that you show show attempts of solving these problems

Quote from: liltiger28 on January 29, 2009, 05:40:12 AM
2) the boiling point of ethanol (C2H5OH) is 78.5 Celsius. what is the boiling point of a solution of 6.4 g of vanillin (M = 152.14 g/mol) in 50.0 g of ethanol. (Kb = 1.22 Celsius/m)

Wikipedia is your friend. It has an entry that can help you on Problem 2.
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