Quantitative Analysis of Organic Compounds

In Carius tube, an organic compound ' $\mathrm{X}$ ' is treated with sodium peroxide to form a mineral acid ' $\mathrm{Y}$ '. The solution of ${\mathrm{BaCl}}_2$ is added to ' $\mathrm{Y}$ ' to form a precipitate ' $\mathrm{Z}$ '. ' $\mathrm{Z}$ ' is used for the quantitative estimation of an extra element. ' $\mathrm{X}$ ' could be

An organic compound on combustion gives $0.22 \mathrm{g} \mathrm{of} {\mathrm{CO}}_2, \mathrm{and} 0.126 \mathrm{g} \mathrm{of} {\mathrm{H}}_2\mathrm{O}$. If the percentage of $\mathrm{C}$ in given organic compound is $40\%$, the percentage of hydrogen will be?

When a hydrocarbon $\mathrm{A}$ undergoes complete combustion it requires $11$ equivalents of oxygen and produces $4$ equivalents of water. What is the molecular formula of $\mathrm{A}$?

A gas mixture has propane $\left({\mathrm{C}}_3{\mathrm{H}}_8\right)$ and butane $\left({\mathrm{C}}_4{\mathrm{H}}_{10}\right)$.  At $\mathrm{S}.\mathrm{T}.\mathrm{P}., 15.68 \mathrm{L} \mathrm{of} {\mathrm{CO}}_2\left(\mathrm{g}\right)$ is produced when mixture is completely oxidised by excess of ${\mathrm{O}}_2\left(\mathrm{g}\right)$. If only propane is oxidised then ${\mathrm{CO}}_2\left(\mathrm{g}\right)$ produced consume $1 \mathrm{L} \mathrm{of} 0.6 \mathrm{M} \mathrm{KOH}$for complete neutralisation. The mass% of ${\mathrm{C}}_4{\mathrm{H}}_{10}$ in mixture is (nearest integer)​

During estimation of nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from $0.73 \mathrm{g}$ of the organic compound neutralised $100 \mathrm{mL}$ of $0.5 \mathrm{N} {\mathrm{H}}_2{\mathrm{SO}}_4$. If $0.73 \mathrm{g}$ of the organic compound is used in the Duma's method, then $\mathrm{x} \mathrm{mL}$ of nitrogen ${\mathrm{N}}_2$ at $300\mathrm{K} \text{and} 623 \mathrm{mm} \text{of} \mathrm{Hg}$ pressure. The value of $\mathrm{x}/30$ is

(Aquesous tension at $300 \mathrm{K}$ is $15 \mathrm{mm}$ and $\mathrm{R}=\frac{0.08 \mathrm{atm} \mathrm{L}}{\mathrm{mol} \mathrm{K}}$.

$10 \mathrm{mL}$ of hydrocarbon as exploded in excess of air. After cooling, there was a contraction in volume of $30 \mathrm{mL}$ and after treatment with $\mathrm{KOH}$, there was a further reduction of $30 \mathrm{mL}$. The formula of hydrocarbon is ${\mathrm{C}}_{\mathrm{x}}{\mathrm{H}}_{\mathrm{y}}$. The value of $\mathrm{x}+\mathrm{y}$ is 

Nitrogen present in $0.295 \mathrm{g}$ of a substance was completely converted to ammonia which was neutralised by $50 \mathrm{mL} \mathrm{of} \frac{1}{10}\mathrm{N} {\mathrm{H}}_2{\mathrm{SO}}_4$. Calculate the percentage of nitrogen.

Consider the following reaction.

On estimation of bromine in $1.00 \mathrm{g}$ of $\mathrm{R}$ using Carius method, the amount of $\mathrm{AgBr}$ formed (in $\mathrm{g}$) is____[Given: Atomic mass of $\mathrm{H}=1, \mathrm{C}=12, \mathrm{O}=16, \mathrm{P}=31, \mathrm{Br}=80, \mathrm{Ag}=108$]

A mixture of $2.3$ g formic acid and $4.5 \mathrm{g}$ oxalic acid is treated with concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4$. The evolved gaseous mixture is passed through $\mathrm{KOH}$ pellets. Weight ($\mathrm{in} \mathrm{g}$) of the remaining product at $\mathrm{STP}$ will be.

Which of following statement is correct

How does organic compounds react with excess of oxygen in presence of $\mathrm{CuO}$?

How does carbon react with excess of oxygen?

Write the reaction for the conversion of sulphur to barium sulphate.

Write the reactions involved in the estimation of sulphur in an organic compound.

In a Carius method, $0.25 \mathrm{g}$ of organic compound on treating with silver nitrate gives $0.43 \mathrm{g}$ of $\mathrm{AgCl}$. Calculate the percentage of chlorine in the given organic compound.

In Carius method of estimation of halogens, $250 \mathrm{mg}$ of an organic compound gave $141 \mathrm{mg}$ of $\mathrm{AgBr}$. The percentage of bromine in the compound is : (atomic mass $\mathrm{Ag} = 108; \mathrm{Br} = 80$)

Carius method is used to estimate which of the following compounds?

Carius method is used for the estimation of halogen. $0.24 \mathrm{g}$ of an organic compound gave $0.36 \mathrm{g}$ of silver bromide. Percentage of bromine present in the compound is
 

Describe the setup for Carius method for the mass of halogens.

In quantitative analysis of carbon and hydrogen in an organic compound, let the mass of organic compound be $\mathrm{m} \mathrm{g}$, mass of water and carbon dioxide produced be ${\mathrm{m}}_1$ and ${\mathrm{m}}_2 \mathrm{g}$ respectively. The percentage of carbon is given as: