Question

1.86 gm of aniline is converted into acetanilide with 90% efficiency. Mass of acetanilide formed
is

$\left[X\right]\times {10}^{-2}gm$

• A. a
• B. b
• C. c
• D. d

Answer 1

The correct option is D d

Ans.

$243\times {10}^{-2}$
$\left(C_{6}H{}_{7}N\right)$ Acetanilide $\left(C_{6}H{}_{7}N\right)$

1.86 g
Molar mass =93 Molar mass =135

$\ast$ 93 g aniline produces 135 g acetanilide

1.86 g aniline produces

$\frac{135\times 1.86}{93}=2.70g$

$\ast$ At 90% efficiency of reaction it produces =$\frac{2.70\times 90}{100}=2.43$g

Ans. $243\times {10}^{-2}$