Give the names of the reagents to bring about the following transformations.
(a) Ethanoic acid to ethanol
(b) Propane 1-ol to propanal
(c) Pent 3-en-2-ol to pent 3-en-2-one
(d) Sodium benzoate to benzene

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Solution

$(a)$ Ethanoic acid to ethanol.
$L i A l H_{4}, N i / H_{2}, P d / H_{2}$ can convert ethanoic acid to ethanol.
or
$C H_{3} C O O H + C_{2} H_{5} O N a ⟶ C_{2} H_{5} O H + C H_{3} C O O N a$
$(b)$ $p r o p a n e 1 - o l$ to $p r o p a n o l$
$p r o p a n e - 1 - o l$ can be converted to $p r o p a n o l$ by using mobileld oxidizing agents like $F e + H C l$ or PCC
$(c)$ $P e n t 3 - e n - 2 - o l$ to $P e n t 3 - e n - 2 - o n e$ .
Pyridium chloro-chromate (PCC) is used for the conversion of primary alcohol to a ketone.
$(d)$ Sodium benzoate is converted into benzene by decarboxylation.

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