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sample_exam_Exam_1 - CHEM 241 SAMPLE EXAM#1 o 1(5 pts In...

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CHEM 241 SAMPLE EXAM #1 1.(5 pts) In the recrystallization lab you cooled the solution from boiling to 0 o C. What would be the consequence of only cooling this solution to 35 o C instead of 0 o C? 2. (6 pts) What would be the consequence of trying to carry out a recrystallization of a mixture that was 60% compound to be purified and 40% organic impurity? 3. (6 pts) In the acid base extraction lab, why did you use 6 M NaOH instead of 1M NaOH to neutralized the acid extracts? 4. (6 pts) In the acid/base extraction lab what was the structure of the compound that was isolated when you neutralized the acidic extracts with 6 M NaOH?
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5. Equal amounts of A, C and H were mixed together and the mixture is distilled. a) (6 pts) What would be the order in which each compound would be distilled over (first, second and third)? b) (8 pts) Circle the gas chromatography trace depicted below which would most likely represent the 1 st mL fraction collected from a simple distillation of A,C and H. NH
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