KVPY SA Exam 2018 Question Paper

Question : 73 of 80

Marks: +1, -0

A solution of 20.2 of 1,2-dibromopropane in MeOH upon heating with excess Zn produce 3.58 g of an unsaturated compound X. The yield (%) of X is closest to
[Atomic weight of Br is 80]

Validate

Solution:

\Mole =20.2/202=0.1

\Mole=3.58/42=0.085

% yield =

0.085/0.1×100=85%

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