22.5g of open chain compound x ( C 3 H 6 O 3 ) treated with excess CH 3 COCl yields 43.5 g of acetylation product. If number of carbonyl groups in x is a and hydroxyl groups is b then 10 a + b

Question

22.5g of open chain compound x ( C 3 ​ H 6 ​ O 3 ​ ) treated with excess CH 3 ​ COCl yields 43.5 g of acetylation product. If number of carbonyl groups in x is a and hydroxyl groups is b then 10 a + b is

TestHub · Accepted Answer

nC 3 ​ H 6 ​ O 3 ​ = 90 22.5 ​ = 0.25 mol mass difference = 43.5 − 22.5 = 21 g due to Ac group n Ac ​ group = 42 21 ​ = 0.5 mol ∴ no.of OH group = 0.25 0.5 ​ = 2 = b no.ofCHOgroup = 1 = a 10A+B=12

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JEE Main 2027 (Class 12+)