Write the letter from the items below that best correspond to each description i

Question

Write the letter from the items below that best correspond to each description in the space provided. MTBE, an ether additive used to increase octane rating of gasoline Simplest alkene, used in great quantities to produce polyethylene Permanent antifreeze, important monomer for polyesters This ether was the first anesthetic; also used commonly as a solvent This cyclic polyether is used to complex metal ions, called an crown ether Fatty acid that is abundant in solid triglycerides (called fats) Simplest alkyne, burns with hot flame, used in oxy-acetylene torch Alcohol formed upon fermentation, found in alcoholic beverages This polyol is found as a key pan of the triglyceride structure of fats & oils Highly strained cyclic ether, very reactive towards acids & nucleophiles

Explanation / Answer

25) a. Markovnikov's rule The rule states that with the addition of a protic acid HX to an unsymmetrical alkene, the acid hydrogen (H) becomes attached to the carbon with fewer alkyl substituents, and thehalide (X) group becomes attached to the carbon with more alkyl substituents. Alternatively, the rule can be stated that the hydrogen atom is added to the carbon with the greater number of hydrogen atoms while the X component is added to the carbon with the fewer number of hydrogen atoms.

* no this product following anti Markovnikov's rule.

b) bacause the less hydrogen carbon contains quaternary amine with +ve charge which is destabilize the carbocation so the chlorine attack at more hydrogen carbon.

26)        MTBE             - G

      polyethylene    - E

      POLYESTER -I

      ETHER           - H

      CROWN ETHER -D

      fatty acid -M

      Alkyne -K

      fermentation - B

      key part - F

    cyclic ether and very reactive - C

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