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?

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 $\mathrm{R}=\frac{0.08 \mathrm{atm} \mathrm{L}}{\mathrm{mol} \mathrm{K}}$.

Which of following statement is correct

The ammonia evolved from the treatment of $0.30 \mathrm{g}$ of an organic compound for the estimation of nitrogen was passed in $100 \mathrm{mL}$ of $0.1 \mathrm{M}$ Sulphuric acid. The excess of acid required $20 \mathrm{mL}$ of $0.5 \mathrm{M}$ Sodium hydroxide solution for complete neutralization. The percentage of nitrogen in the organic compound is (Report the answer in the nearest integer).

$0.25 \mathrm{gm}$ of organic compound on analysis by Dumas method produce $32 \mathrm{ml}$ of nitrogen gas at $\mathrm{STP}$. The percentage of nitrogen is?

Which of the following is correct?

The ${\mathrm{NH}}_3$ evolved from $0.5 \mathrm{gram}$ of an organic compound in Kjeldahl method, neutralized $20 \mathrm{ml}$ of $\frac{\mathrm{M}}{2}{\mathrm{H}}_2{\mathrm{SO}}_4$. Find the $\%$ of nitrogen :-

Estimation of oxygen in an organic compound can be made by.

Which of the following method is used for the estimation of oxygen?

An organic compound weighing $0.244 \mathrm{g}$ on combustion with dry oxygen produces $0.616 \mathrm{g} \mathrm{of} {\mathrm{CO}}_2 \mathrm{and} 0.108 \mathrm{g} \mathrm{of} {\mathrm{H}}_2\mathrm{O}$. Determine the percentage composition of the oxygen in compound.

During estimation of nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from $0.5 \mathrm{g}$ of the compound in Kjeldahl's estimation of nitrogen neutralized $10 \mathrm{mL} \mathrm{of} 1\mathrm{M} {\mathrm{H}}_2{\mathrm{SO}}_4$.​ The percentage of nitrogen in the compound is :

In the Kjeldahl's method for estimation of nitrogen present in a soil sample, ammonia evolved from 0.75 g of sample neutralized 10 mL of 1M ${\mathrm{H}}_2{\mathrm{SO}}_4$. The percentage of nitrogen in the soil is

Liebig's method is used for the estimation of

Carbon and hydrogen are estimated in organic compounds by

Carius method is used for the quantitative estimation of$\_\_\_\_\_$.

In an estimation of $\mathrm{S}$ by Carius method $0.2175\mathrm{g}$ of the compound gave $0.5825\mathrm{g} \mathrm{of} {\mathrm{BaSO}}_4$​. Percentage of $\mathrm{S}$ is :

During the estimation of phosphorous, $10 \mathrm{g}$ of an organic compound gave $6.73 \mathrm{g}$ of ${\mathrm{Mg}}_2{\mathrm{P}}_2{\mathrm{O}}_7$​. What is the percentage of phosphorous in the organic compound?

In an organic compound, phosphorus is estimated as $\_\_\_\_\_$.