How many grams of sulfur (S8) would have to be dissolved in 125.0 g of carbon tetrachloride to lower the freezing point by 2.10 degrees celsius?
kf = 29.8 K-kg/mol for CCl4
2007-03-08 13:14:08 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
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2007-03-08 13:27:51 · answer #1 · answered by fhd h 1 · 0⤊ 0⤋
I guess you can use my question as a ref.
How many grams of sulfur (S8) would have to be dissolved in 110.0 g of carbon tetrachloride to lower the freezing point by 1.70 degrees celsius?
kf = 29.8 K-kg/mol for CCl4
Enter a numerical answer only, do not include units in the answer you enter
Correct, computer gets: 1.60945503355705
Hint: Don't forget to include the van't Hoff factor i, if it is needed.
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This is how I solve it:
(1.70)*(0.110)/(1)(29.8)=.0062751678
(32.066)*(8 atoms)*(.0062751678)=1.609756245
2007-03-08 14:10:18 · answer #2 · answered by Raki 3 · 0⤊ 0⤋
Again, please see my previous post where I have solved almost the exact same question.
http://answers.yahoo.com/question/index;_ylt=Al49CHqp9NV_tc18fq3hNFbty6IX?qid=20070307103312AAvIRks&show=7#profile-info-cU6rtQyraa
2007-03-08 13:53:52 · answer #3 · answered by tickdhero 4 · 0⤊ 0⤋