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et Chrome File Edit View History Bookmarks People Window Help -1(73%) a C fi Dwww.saplínglearning.com/ibiscms/mod/ibis/view.php?id-2265246 Thu 11:38 AM Theresa Lewis Virginia Polytechnic Institu × sapling learning Grade Category: Graded Description: Policies: For the protons labeled Ha and Hb in the structure below, predict the characteristics of their signals in the H NMR spectrum: the approximate chemical shift, the splitting pattern, and the integration value Approximate Homework Splitting Integration value chemical shift 1 ppm O 2 ppm H NMR signal for Ha O singlet O doublet O triplet You can check your answers. You can view solutions when yo up on any question. 3-4 ppm 5-6 ppm O 7-8 ppm 4H 5H 6H quartet O septet O multiplet You can keep trying to answer e you get it right or give up. You lose 5% of the points availab in your question for each incorrs answer H NMR signal for Hb O 1 ppm O 2 ppm O singlet O doublet O triplet O quartet O septet O multiplet 1H O 2H 3-4 ppm O 5-6 ppm O 7-8 ppm Help With This Topic Web Help & Videos Technical Support and Bug Re Previous Give Up & View Solution O Check Answer Next Exit Hint EN 3

Explanation / Answer

1H NMR signal for Ha

Approximate chemical shift : 3 - 4 ppm (But it should come arround 2.7-3.2)

Splitting : quartet (since both CH3 groups are equivalent)

Integration value : 1H

1H NMR signal for Hb

Approximate chemical shift : 3 - 4 ppm (But it should come arround 2.7-3.2)

Splitting : quartet (CH3 group is adjacent)

Integration value : 2H

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