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7 Cards in this Set
- Front
- Back
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Write a balanced equation for the oxidation of isoborneolby NaOCl.
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Do it on a seperate sheet
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What do you actually observe in a "postive KI-starch test"? What does it mean when it is mentioned at the end of the first paragraph in the Experimental Procedure that the KI-Starch test is positive?
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In a "positive KI-starch test" the white starch paper turns from it's white color to a blue -black color. And if the KI-starchtest proves to positive as stated in the experiment procedure it mean that there is an excess amount of the oxidizing agent left in the reaction mixture.
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What is the purpose of adding NaHSO3at the end of the oxidtaion? Write a balanced equation for the reaction it undergoes.
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In adding NaHSO3 at the end of oxidation is to quesnch the excess HOCl that is produced at the end of the end of the reaction, this is the purpose NaHSO3.
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In the experiment Reduction of Camphor to Isoborneol with Sodium Borohydride.
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It involves the use of a reducing agent (sodium borohydride)for converting a ketone (camphor) to a secondary alcohol(isoborneol).
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Explain why the gem-dimethyl groups appear as separate peaks in the proton NMR spectrum of isoborneol while thy are an unresolved singlet in borneol.
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This is because isoborneol is an exo-isomer of borneol therefore since proton NMR look at the proton and since isoborneol is exo it has mnore proton available to be ssen through NMR.
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The reduction imechanism is often shown with a hydride (H:-)ion attacking the carbonyl carbon. Why might one assign a partial negative charge to the hydorgems in sodium borohydride?
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This is because the H is more electronegative then Boron.
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Why must one be careful when using diethyl ether in a reaction.
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This is because Diethyl ether is extremely flammable.
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