1999spring-midterm02

1999spring-midterm02 - Name ID Chemistry 140C Spring 1999...

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Name: ________________________ ID# _________________ 5-20-99 1 Chemistry 140C Spring 1999 – 2nd Midterm Exam This exam accounts for 25% of the final grade. Time 6:00 – 8:00 p.m. Mark your final answer clearly and completely erase irrelevant information! Remember: Exams written in pencil will not be regraded! Additional pages are at the end for your convenience. Please indicate if your final answer should be found at the end of the exam. Good Luck! Your Name (Please Print): _____________________________ Your ID # : Question # 1: . ..................................................................... /40 Question # 2: . /35 Question # 3: . /25 Question # 4: . /15 Question # 5: . Total ..................................................................................... /150
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Name: ________________________ ID# _________________ 5-20-99 2 1. Raffinose (structure 1 ) is a trisaccharide found in sugar beets. (a) Is raffinose a reducing or a non-reducing sugar? (b) Identify all glycosidic linkages in raffinose, and classify them as α or β . Show your answer on the structure depicted above. (c) Show the structures of monosaccharides obtained when raffinose is hydrolyzed in aqueous acid. (d) What products are formed when raffinose is treated with excess dimethyl sulfate in aqueous NaOH, and the methylation product is hydrolyzed in aqueous acid?
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This note was uploaded on 04/14/2009 for the course CHEM140C 234234 taught by Professor Nefzi during the Spring '09 term at UCSD.

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1999spring-midterm02 - Name ID Chemistry 140C Spring 1999...

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