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Alcohols, Phenols and Ethers

Short Answer Type

131.

Which of the following can easily undergo Williamson's synthesis to prepare ether?

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132.

Write the reaction for the synthesis of benzyl methyl ether.

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133.

Name the ether used as inhalation an aesthetic. What are the disadvantages of using it?

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134.

How would you differentiate between phenol and carboxylic acid by a simple chemcial test?

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135.
Explain why is propanol has higher boiling point than that of hydrocarbon, butane?

Propanol has higher boiling point than butane because of wide spread H-bonding among propanol molecules. A lot of energy is required to break inter molecular H-bonding among propanol molecules. There is no such bonding in butane.

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136. Alcohols are comparatively more soluble in water than hydrocarbons of comparable molecular masses. Explain this fact.

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137.

Of the two hydroxy organic compounds ROH and R'OH, the first one is basic and the other is acidic in behaviour. How is R different from R'?

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138.

Why does phenol get coloured on long standing?

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139. How is the C—OH bond in phenol stabilised?

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140.

Phenol is acidic but does not decompose NaHCO₃ solution while carbonic acids like CH₃COOH decompose NaHCO₃ solution. Why?