CHEM1442-PreLab-641.pdf - \\00 UTA-M l Fl 7 PRELAB PROBLEMS Name EXPERIMENT UTA-641 Section Freezing Point Depression Date tMJ l I Why should terr-butyl

CHEM1442-PreLab-641.pdf - 00 UTA-M l Fl 7 PRELAB PROBLEMS...

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Fl 7 PRELAB PROBLEMS EXPERIMENT UTA-641 Freezing Point Depression \ \ 00) Name Section Date U TA -M l I. Why should terr-butyl alcohol not be warmed ab7ve 30 °C? /J - 1 1 · ) ')k ,t, llf'1 COM ~~ ~ tMJ, l AAJ J 1 111 1 ~ a.fc.~(., tu l t ,,c., .,,.,,,,.- - 2. During the determination of the Kr of terr-butyl alcohol (Part B), a solution of water and alcohol will be preIJared. Which is the solute and which is the solvent? 3. Calculate the molality of a solution prepared by adding 0. 72 mL of water to 15 . 73 g of terr-butyl alcohol . --- dhmol ~~ -: ~rf YI Dl str fv.n - 0 ,0 40 M~ ~,o -1 ~ , 01J LH ~, ti= ka.. ~o~ 0 ,l) \ <; l 3 h- ,. 71,i,i - V, .L{ - 2,5 k:~ / ., . WI ? (\ ,< ), OD~ 1D -:. () . 1,h , J -J 7 f-.t1 L -1/ 7 0 "' -i ~J ~~ - 15 u 3 w- Uf ;t .Lb_ looo~ - o. o ''51 ~~ w~ tl ' 0.'./;\~z Ox l l' lol H 1 D I~ . oJ-:/1 1 0 4. In the example given in thi.: background for this lab , the freezing point of pure water was measured to be 0. 18 ° C. The accepted freezing
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