JEE Advanced · 2021 · 03 Oct 2021 · Paper 2 · Compounds Containing Nitrogen

Reaction of

x g

of Sn with HCl quantitatively produced a salt. Entire amount of the salt reacted with

yg

of nitrobenzene in the presence of required amount of HCl to produce 1.29 g of an organic salt (quantitatively).
(Use Molar masses (in

g mol^{- 1}

) of H, C, N, O, Cl and Sn as 1, 12, 14, 16, 35 and 119, respectively).

The value of

y

is ____.

Answer: 1.23

Solution

From the previous question, 0.01 mol of nitrobenzene is required. Molar mass of nitrobenzene (

C_{6} H_{5} NO_{2}

) = 6(12) + 5(1) + 14 + 2(16) = 123 g/mol. Mass of nitrobenzene = 0.01 × 123 = 1.23 g.

JEE Advanced · 2021 · 03 Oct 2021 · Paper 2 · Numerical answer