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  4. Sodium benzoate overset textNaOH + textCaO undersetΔ arrow X overset( textCl)2 , ( textFeCl)3 underset310 - 320 textK arrow Y oversetc o n c . ( textH)2 ( textSO)4 undersetΔ arrow Z (.MajorProduct.) . Gram molecular weight of the major product(in grams) is Y. Calculate the value of 10Y?

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Q. Sodium benzoate $\overset{\text{NaOH} + \text{CaO}}{\underset{\Delta }{ \rightarrow }}X\overset{\left(\text{Cl}\right)_{2} , \left(\text{FeCl}\right)_{3}}{\underset{310 - 320 \text{K}}{ \rightarrow }}Y\overset{c o n c . \, \left(\text{H}\right)_{2} \left(\text{SO}\right)_{4}}{\underset{\Delta }{ \rightarrow }}Z \\ \left(\right.MajorProduct\left.\right)$ . Gram molecular weight of the major product(in grams) is Y. Calculate the value of 10Y?

NTA AbhyasNTA Abhyas 2022

Solution:

Solution
Heating of sodium acetate with sodalime (mixture of NaOH + CaO) is called decarboxylation:Decarboxylation is a chemical reaction that removes a carboxyl group and releases carbon dioxide. The given reaction involves removal of carbon dioxide molecule, therefore, it is a decarboxylation reaction.