1.(4 points) Which of the following is not a property of ethers which makes them

Question

1.(4 points) Which of the following is not a property of ethers which makes them good solvents in organic reactions? A) They dissolve a wide range of polar substances. B) They have relatively high boiling points for their molecular weights C) They are nonhydroxylic. D) They are normally unreactive toward strong bases. 2. (4 points) Magnesium monoperoxyphthalate is often used as a reagent in what process? A) Williamson ether synthesis C) halohydrin formation B) dehydration D) epoxidation 3. (4 points) Which of the following is produced by the reaction of (CH3CH2)2S with CH3CH21? A) CH3CH2CH2CH2 C) (CH3CH2)3S B) (CH3CH2)3S I D) CH3SCH2CH2CH3 4. (4 points) Absorption of UV-visible energy by a molecule results in energy absorption corresponds to a A) vibrational transitions, a to x" transition B) electronic transitions, ? to ?. transition C) vibrational transitions, ? to ? transition D) electronic transitions, ? to ? transition and the lowest s. (4 points) What are the expected products of the reaction of PhOCH2CH3 with concentrated HI? A) phenol and ethanol B) iodobenzene and iodoethane C) iodobenzene and ethanol D) phenol and iodoethane 6, (4 points) In the allyl radical, which ? molecular orbital is singly occupied? A) The bonding ? molecular orbital. B) The nonbonding x molecular orbital. C) The antibonding a molecular orbital. D) None of the above 7. (4 points) How many molecular orbitals are needed to represent the conjugated pi system of f- carotene? A) 10 20 B) 11 D) 22

Explanation / Answer

Answer 1) B) they have relatively high boiling points for their molecular weight.

Above sentence is wrong because ethers have low boiling point.

Answer 2): D) Epoxidation

Answer 3): C) (CH3CH2)3S

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