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Chemistry - Complete Pblock- Question with Solution | TestHub

ChemistryComplete Pblock-p-Block 13,14Easy2 minPYQ_2021

ChemistryEasynumerical

Passage / Comprehension

Reaction of $x$ g of $Sn$ with $HCl$ quantitatively produced a salt. Entire amount of the salt reacted with $y g$ 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 $x$ is _______ .

Answer:

3.57

Solution:

Mass of salt produced $= 1.29 g$

Moles of salt produced $= \frac{1 .29}{129} = 0 .01 mole$

To produce, $0.01 mole$ organic salt $0.01 mole$

${PhNO}_{2}$ and $0.03 mole {SnCl}_{2}$ is required.

$0.03 mole {SnCl}_{2}$ is produced from $0.03 mole$ $Sn .$

Mass of $Sn = x gm = 0 .03 \times 119 = 3 .57 g$

Mass of ${PhNO}_{2} = y gm = 0 .01 \times 123 = 1 .23 g$

$x = 3 .57 y = 1.23$

Stream:JEE_ADVSubject:ChemistryTopic:Complete Pblock-Subtopic:p-Block 13,14

⏱ 2mℹ️ Source: PYQ_2021

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