homework_sheet_2_naming_and_oxidation_of_alcohols

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Nov 24, 2024

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Homework Worksheet #2 Name: Due: 27 th February 2015 1. Name the following alkenes. (a) CH 3 CHCHCH 2 CH 2 CH 3 (b) CH 3 CH 2 CHC(CH 3 ) 2 2. Alkenes can be prepared by an ELIMINATION reaction on an alcohol. Complete the following reaction showing what alkene is produced. CH 3 CH 2 CH 2 OH + H 2 O 3. Name the following alcohols. (a) CH 3 CH 2 CH 2 CH 2 OH (b) CH 3 CHOHCH(CH 3 ) 2 4. Alcohols can be classified as primary, secondary or tertiary. Name and classify the following. 5. Alcohols can be prepared from alkenes. Concentrated sulfuric acid diluted to about 50% with water will effectively add H 2 O across the double bond. Complete the following equations. (a) CH 3 CH=CHCH 3 (b) CH 2 =CHCH 3 + (c) In (b), which of the two products is the major one? 6. (a) Describe the trend in boiling points in the series methanol, ethanol, propanol, butanol. (b) Explain why an alcohol such as propanol has a much higher boiling point than its corresponding alkane, propane. CH 3 CH 3 CH 3 C OH CH 3 H CH 3 C OH CH 3 CH 2 OH CH CH 3 CH 3 CH 2 CH 2 CH 2 OH CH 3 CH 2 C (CH 3 ) 2 OH CH 3 CH OH CH 2 CH 3 CH 2 CH 2 conc. H 2 SO 4 heat Dil. H 2 SO 4 Dil. H 2 SO 4
CH 3 CH 3 CH 3 C OH CH 3 H CH 3 C OH CH 3 CH 2 OH CH CH 3 CH 3 CH 2 CH 2 CH 2 OH CH 3 CH 2 CH(CH 3 ) 2 OH CH 3 CH OH CH 2 CH 3 CH 2 CH 2 (c) Explain why the lower molecular weight alcohols are soluble in water while the higher ones are not. 7. Alcohols can be oxidised by strong oxidising agents such as Primary alcohols are first oxidised to and then to . Secondary alcohols are oxidised to . alcohols are not able to be oxidised. 8. The following alcohols are reacted with acidified potassium permanganate solution. Under each formula, draw and name the product(s) of their oxidation. If no reaction occurs, write no product in the box. 9. Explain why tertiary alcohols cannot be oxidised in this way.
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