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JEE Main202124 Feb 2021Evening ShiftChemistrySome Basic Concepts of ChemistryActual

1 . 86 g of aniline completely reacts to form acetanilide. 10 % of the product is lost during purification. Amount of acetanilide obtained after purification (in g ) is ___________ × 10 - 2 .

Correct answer

0

Step-by-step solution

Given 1 . 86   g ⇒ 1   mol   C 6 H 5 NH 2 give 1   mol ∴ moles of C 6 H 5 NH 2 = moles of ⇒ 1 . 86 93 = W acetanilide  135 ⇒ W acelanilide  = 1 . 86 × 135 93   g = 2 . 70   g But efficiency of reaction is 90 % only ∴ Mass of acetanilide produced = 2 . 70 × 90 100   g = 2 . 43   g = 243 × 10 - 2   g ⇒ x = 243

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