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Molecular Formula

How can we ge...

Question

How can we get compound $A$ back from $B$ ?

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Solution

Here compound A is ethanol or acetic acid or vinegar which on Hydrolysis with dil.alkali NaOH give back A but in its constituent salt.
compound A can be obtained from compound B by the action of an acid or a base ie., saponification
${C H}_{3} C O O C_{2} H_{5} N a O H - --- \to C_{2} H_{5} O H + {C H}_{3} C O O H$

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