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QJEEM20Ch18eb: JEE Main 2020 Chemistry - Class 12 JEEM20Ch18eb Solution: A solution of phenol in chloroform when treated with aqueous…

A solution of phenol in chloroform when treated with aqueous NaOH gives compound P as a major product. The mass percentage of carbon in P is ______. (to the nearest integer)
(Atomic mass : C = 12; H = 1; O = 16)

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JEE Main 2020 (Online) 6th September Evening Slot Chemistry - Alcohols, Phenols and Ethers Question 110 English Explanation

mass of Salicylaldehyde = 12 × 7 + 6 × 1 + 16 × 2 = 122

mass of carbon = 12 × 7 = 84

∴\therefore mass % of C in P = 84122{{84} \over {122}} ×\times 100

= 68.85 % ≃\simeq 69 %

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