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Haloalkanes and Haloarenes

Short Answer Type

41. What happens when a haloalkane reacts with sodium metal in dry ether?

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42.

With the help of a chemical equation show how will you convert 2-propanol to 1-bromo-propane.

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43. Which compound in each of the following pairs will react faster in S_N2 reaction with -OH?
CH₃Br or CH₃I

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44. Which compound in each of the following pairs will react faster in S_N2 reaction with -OH?
(CH₃)₃ CCl or CH₃Cl

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45.

What happens when bromoethane is treated with aqueous potassium hydroxide?

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46.

What are polyhalogen compounds? Give two examples of such compounds.

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47. Why is chloroform kept in dark bottles?

Chloroform is slowly oxidised by air in the presence of light to an extremely poisonous gas, carbonyl chloride, also known as phosgene. It is therefore stored in closed dark coloured bottles completely filled so that air is kept out.

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48.

Name the products formed when acetone is warmed with sodium hypoiodite solution.

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49.

Why are chlorine derivates of organic compounds used as solvents in industry?

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50.

Give one reason why the organic halogen compounds used as solvents in industry are chlorides rather than bromides.

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