Question:
$29.5\, mg$ of an organic compound containing nitrogen was digested according to Kjeldahl?s method and the evolved ammonia was absorbed in $20\, mL$ of $0.1\, M\, HCl$ solution. The excess of the acid required $15 \,mL$ of $0.1\, M\, NaOH$ solution for complete neutralization. The percentage of nitrogen in the compound is
$29.5\, mg$ of an organic compound containing nitrogen was digested according to Kjeldahl?s method and the evolved ammonia was absorbed in $20\, mL$ of $0.1\, M\, HCl$ solution. The excess of the acid required $15 \,mL$ of $0.1\, M\, NaOH$ solution for complete neutralization. The percentage of nitrogen in the compound is
Updated On: Jun 23, 2023
- 59
- 47.4
- 23.7
- 29.5
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Moles of HCl reacting with ammonia
= (moles of HCl absorbed ) - (moles of NaOH solution required)
$= (20 \times 0.1 \times 10^{-3}) - (15 \times 0.1 \times 10^{-3})$
= moles of $NH_3$ evolved.
= moles of nitrogen in organic compound
$\therefore$ wt. of nitrogen in org. comp $= 0.5 \times 10^{-3} \times 14$
$= 7\times 10^{-3}\,g$
$\% wt = \frac{7\times 10^{-3}}{29.5\times 10^{-3}} = 23.7\%$
Was this answer helpful?
0
0
Top Questions on Organic Chemistry- Some Basic Principles and Techniques
- The most stable carbocation among the following is:
- NEET (UG) - 2024
- Chemistry
- Organic Chemistry- Some Basic Principles and Techniques
- The compound that will undergo SN1 reaction with the fastest rate is
- NEET (UG) - 2024
- Chemistry
- Organic Chemistry- Some Basic Principles and Techniques
- Match List I with List II
List-I
(Conversion)List-II
(Shape/geometry)(A) 1 mol of H2O to O2 (I) 3F (B) 1 mol of MnO-4 to Mn2+ (II) 2F (C) 1.5 mol of Ca from molten CaCl2 (III) 1F (D) 1 mol of FeO to Fe2O3 (IV) 5F
Choose the correct answer from the options given below:- NEET (UG) - 2024
- Chemistry
- Organic Chemistry- Some Basic Principles and Techniques
- Given below are two statements :
Statement I : The boiling point of three isomeric pentanes follows the order
n-pentane > isopentane > neopentane
Statement II : When branching increases, the molecule attains a shape of sphere. This results in smaller surface area for contact, due to which the intermolecular forces between the spherical molecules are weak, thereby lowering the boiling point.
In the light of the above statements, choose the most appropriate answer from the options given below :- NEET (UG) - 2024
- Chemistry
- Organic Chemistry- Some Basic Principles and Techniques
- Match List I with List II
List-I
(Complex)List-II
(Type of isomerism)(A) [Co(NH3)5(NO2)]Cl2 (I) Solvate isomerism (B) [Co(NH3)5(SO4)]Br (II) Linkage isomerism (C) [Co(NH3)6] [Cr(CN)6] (III) Ionization isomerism (D) [Co(H2O)6]Cl3 (IV) Coordination isomerism
Choose the correct answer from the options given below:- NEET (UG) - 2024
- Chemistry
- Organic Chemistry- Some Basic Principles and Techniques
View More Questions
Questions Asked in AIEEE exam
- This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements. It is not possible to make a sphere of capacity $1$ farad using a conducting material. It is possible for earth as its radius is $6.4 \times 10^6\,m$.
- AIEEE - 2012
- electrostatic potential and capacitance
- A steel wire can sustain $100\, kg$ weight without breaking. If the wire is cut into two equal parts, each part can sustain a weight of
- AIEEE - 2012
- mechanical properties of solids
- The limiting line in Balmer series will have a frequency of (Rydberg constant, $R_{\infty}=3.29\times10^{15}$ cycles/s)
- AIEEE - 2012
- Electromagnetic Spectrum
- Which of the plots shown in the figure represents speed (v) of the electron in a hydrogen atom as a function of the principal quantum number (n)?
- The ratio of number of oxygen atoms (O) in 16.0 g ozone $(O_3), \,28.0\, g$ carbon monoxide $(CO)$ and $16.0$ oxygen $(O_2)$ is (Atomic mass: $C = 12,0 = 16$ and Avogadro?? constant $N_A = 6.0 x 10^{23}\, mol^{-1}$)
- AIEEE - 2012
- Mole concept and Molar Masses
View More Questions
Concepts Used:
Organic Chemistry - Some Basic Principles and Techniques
Organic Chemistry is a subset of chemistry dealing with compounds of carbon. Therefore, we can say that Organic chemistry is the chemistry of carbon compounds and is 200-225 years old. Carbon forms bond with itself to form long chains of hydrocarbons, e.g.CH4, methane and CH3-CH3 ethane. Carbon has the ability to form carbon-carbon bonds quite elaborately. Polymers like polyethylene is a linear chain where hundreds of CH2 are linked together.
Read Also: Organic Compounds
Importance of Organic Chemistry:
Organic chemistry is applicable in a variety of areas including-
- Medicines: Example- Aspirin which is a headache medicine and Ibuprofen is a painkiller, both are organic compounds. Other examples include paracetamol.
- Food: Example- Starch which is a carbohydrate is an organic compound and a constituent of rice and other grains. It is the source of energy.
- Clothing: Example- Nylon, Polyester and Cotton are forms of organic compounds.
- Fuels: Examples- Gasoline, Petrol and Diesel are organic compounds used in the automobile industry at large.