JEE Mains · Chemistry · STD 11 - 8.3. Organic chemistry purification and characterization
0.53 g of an organic compound \(( x )\) when heated with excess of nitric acid (concentrated) and then with silver nitrate gave 0.75 g of silver bromide precipitate. 1.0 g of \(( x )\) gave 1.32 g of \(CO _2\) gas on combustion. The percentage of hydrogen in the compound \(( x )\) is __________ %. [Nearest Integer]
[Given : Molar mass in \(g mol ^{-1} H : 1, C : 12, Br : 80, Ag : 108, O : 16 ;\) Compound \(\left.( x ): C _{ x } H _{ y } Br _{ z }\right]\)
- A 2%
- B 6%
- C 1%
- D 4%
Answer & Solution
Correct Answer
(D) 4%
Step-by-step Solution
Detailed explanation
\(\begin{array}{cl} C _{ x } H _{ y } Br _{ z } & \rightarrow \quad CO _2 \\ 1 g & 1.32 g\end{array}\) \(\% C=\frac{1.32 \times 12}{44 \times 1} \times 100=36 \%\) \(\begin{array}{clc} C _{ x } H _{ y } Br _{ z } & \rightarrow & AgBr \\ 0.53 g & & 0.75 g\end{array}\)…
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