Medium
On complete combustion,$0.246 \ g$ of an organic compound gave $0.198 \ g$ of carbon dioxide and $0.1014 \ g$ of water. Determine the percentage composition of carbon and hydrogen in the compound.
The percentage of carbon is calculated as: $\text{Percentage of carbon} = \frac{12 \times \text{mass of } CO_2 \times 100}{44 \times \text{mass of compound}} = \frac{12 \times 0.198 \times 100}{44 \times 0.246} = 21.95 \ \%$.
The percentage of hydrogen is calculated as: $\text{Percentage of hydrogen} = \frac{2 \times \text{mass of } H_2O \times 100}{18 \times \text{mass of compound}} = \frac{2 \times 0.1014 \times 100}{18 \times 0.246} = 4.58 \ \%$.
The percentage of hydrogen is calculated as: $\text{Percentage of hydrogen} = \frac{2 \times \text{mass of } H_2O \times 100}{18 \times \text{mass of compound}} = \frac{2 \times 0.1014 \times 100}{18 \times 0.246} = 4.58 \ \%$.
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$0.53 \ g$ 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 $(x) : C_xH_yBr_z$] (in $\%$)
[Given : Molar mass in $g \ mol^{-1} H : 1, C : 12, Br : 80, Ag : 108, O : 16$; Compound $(x) : C_xH_yBr_z$] (in $\%$)
DifficultJEE MAIN 2026
View SolutionIn Kjeldahl's method for the estimation of nitrogen,$3.88 \ mg$ of an organic compound produces ammonia which requires $5.73 \ mL$ of $0.011 \ N$ $HCl$ for neutralization. Calculate the percentage of nitrogen in the compound.
Medium
View SolutionIn the Carius method for the estimation of halogen,$0.172 \ g$ of an organic compound showed the presence of $0.08 \ g$ of bromine. Which of these is the correct structure of the compound?
$0.3 \ g$ of an organic compound gave $50 \ mL$ of nitrogen collected at $300 \ K$ and $715 \ mm$ pressure in Dumas method. Calculate the percentage of nitrogen in the compound (aqueous tension of water at $300 \ K$ is $15 \ mm$).
Difficult
View SolutionMatch column $-I$ and column $-II$ with the correct relation:
Column $-I$ Column $-II$ $(i)$ Dumas method $(a)$ Absorption of $NH_3$ in $H_2SO_4$ $(ii)$ Kjeldahl's method $(b)$ $BaCl_2$ by added $BaSO_4$ $(iii)$ Carius method $(c)$ Mixture of Magnesia $(iv)$ Estimation of phosphorus $(d)$ $N_2$
| Column $-I$ | Column $-II$ |
|---|---|
| $(i)$ Dumas method | $(a)$ Absorption of $NH_3$ in $H_2SO_4$ |
| $(ii)$ Kjeldahl's method | $(b)$ $BaCl_2$ by added $BaSO_4$ |
| $(iii)$ Carius method | $(c)$ Mixture of Magnesia |
| $(iv)$ Estimation of phosphorus | $(d)$ $N_2$ |
Easy
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