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131. What happens when ethanoic acid is heated with P₂O₅?

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132. Write the structure and IUPAC name of the compound B in the reaction:

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133. What is decarboxylation?

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134. Write the products A and B in the following reaction:

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135. Give a chemical test to distinguish between CH₃COOH and HCOOH.

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136.

Convert acetic acid into t-butyl alcohol.

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137. Differentiate between n-pentanol and pentanoic acid.

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138.

Give the product formed with C₆H₅COOH reacts with
(i) Br₂/Fe
(ii) Conc.HNO₃/H₂SO₄

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Soda lime (NaOH + CaO).

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140. Why does benzoic acid not undergo Friedel-Craft reaction?

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