Quantitative Analysis of Organic Compounds

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
 

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:

In which of the following methods the organic compound yields nitrogen gas by heating it with copper(II) oxide in the presence of carbon dioxide gas.

Kjeldahl's trap is the part of 

Using Duma's method for estimating nitrogen, $1 \mathrm{g}$ of an organic compound $\mathrm{X}\text{'}$ gave $82 \mathrm{ml}$ of nitrogen, collected at $27°\mathrm{C}$ and $750 \mathrm{mm} \mathrm{Hg}$ pressure. If the aqueous tension at $27°\mathrm{C}$ is $30 \mathrm{mm} \mathrm{Hg}$ pressure, then the percentage of nitrogen in the given compound $X$ is

In Kjeldahl's method, organic $\text{'}\mathrm{N}\text{'}$ is estimated as

Which of the following method is used for the estimation of oxygen in an organic compound?

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?

$0.35 \mathrm{g}$ of an organic compound in Duma's estimation for nitrogen gave $55 \mathrm{ml}$ of nitrogen at $300 \mathrm{K}$ and $715 \mathrm{mm}$ pressure. If the aqueous tension at $300 \mathrm{K}$ is $15 \mathrm{mm}$ of $\mathrm{Hg}$ pressure, the percentage of nitrogen in the compound is:

Which of the following is correct?

In Kjeldahl's method the gas evolved from $1.731 \mathrm{g}$ sample of a fertilizer is passed into $50 \mathrm{ml}$ of $0.20 \mathrm{N}$ of ${\mathrm{H}}_2{\mathrm{SO}}_4. 25 \mathrm{ml}$ of $0.19 \mathrm{N} \mathrm{NaOH}$ are required for the titration of unused acid. The percentage of nitrogen by mass in fertilizer is :

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