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Aldehydes, Ketones and Carboxylic Acids

Short Answer Type

111. But-2-en-1, 4-dioic acid exist in two isomeric forms. Write the structure of these two isomers?

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112. How will you synthesise propanoic acid from propylene?

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113.

Synthesise propanoic acid from bromoethane.

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114.

Convert ethanol into propanoic acid.

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115. Write the structure and IUPAC name of the product formed:

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116.
What is the structure of the compound A in the following reaction?

The compound A is

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117.

In the following sequence of reaction, A and B are two unknown compounds. Identify them.

$CH subscript 2 space equals space CH subscript 2 space rightwards arrow with Br subscript 2 on top space straight A space rightwards arrow from straight H subscript 3 straight O to the power of plus to alc. space KCN of straight B$