Question:
Arrange the following compounds as asked:
(a) In decreasing order of pKb values
C2H5NH2, (C2H5)2NH, C6H5NHCH3, C6H5NH2
(b) In increasing order of boiling point
C2H5OH, C2H5NH2, (CH3)2NH
(c) In increasing order of solubility in water
C6H5NH2, (C2H5)2NH, C2H5NH2
Arrange the following compounds as asked:
(a) In decreasing order of pKb values
C2H5NH2, (C2H5)2NH, C6H5NHCH3, C6H5NH2
(b) In increasing order of boiling point
C2H5OH, C2H5NH2, (CH3)2NH
(c) In increasing order of solubility in water
C6H5NH2, (C2H5)2NH, C2H5NH2
(a) In decreasing order of pKb values
C2H5NH2, (C2H5)2NH, C6H5NHCH3, C6H5NH2
(b) In increasing order of boiling point
C2H5OH, C2H5NH2, (CH3)2NH
(c) In increasing order of solubility in water
C6H5NH2, (C2H5)2NH, C2H5NH2
Show Hint
Basicity, boiling point, and solubility are influenced by factors like hydrogen bonding, alkyl group size, and resonance.
Updated On: Jun 24, 2025
Hide Solution
Verified By Collegedunia
Solution and Explanation
(a) Decreasing order of pKb values (i.e., increasing basicity):
\( (\text{C}_2\text{H}_5)_2\text{NH}>\text{C}_2\text{H}_5\text{NH}_2>\text{C}_6\text{H}_5\text{NHCH}_3>\text{C}_6\text{H}_5\text{NH}_2 \)
(b) Increasing order of boiling point:
\( (\text{CH}_3)_2\text{NH}<\text{C}_2\text{H}_5\text{NH}_2<\text{C}_2\text{H}_5\text{OH} \)
(c) Increasing order of solubility in water:
\( \text{C}_6\text{H}_5\text{NH}_2<(\text{C}_2\text{H}_5)_2\text{NH}<\text{C}_2\text{H}_5\text{NH}_2 \)
Was this answer helpful?
0
0
Top Questions on Amines
- The best reagent for converting propanamide into propanamine is:
- Give plausible explanation for the following: (a) Diazonium salts of aromatic amines are stable.
(b) Aniline does not undergo Friedel–Crafts reaction.
(c) Aniline on nitration gives a substantial amount of meta product. - Assertion (A): Acetamide (structure: \(\text{C}_6\text{H}_5\text{NHCOCH}_3\)) is less basic than aniline.
Reason (R): Acetylation of aniline results in decrease of electron density on nitrogen. - The chemical test which can be used to distinguish between ethanamine and aniline is:
- If amines are arranged in increasing order of their basic strength in gaseous phase, the correct order will be:
View More Questions
Questions Asked in CBSE CLASS XII exam
- A meeting will be held only if all three members A, B and C are present. The probability that member A does not turn up is 0.10, member B does not turn up is 0.20 and member C does not turn up is 0.05. The probability of the meeting being cancelled is:
- CBSE CLASS XII - 2025
- Probability
- If $A = \begin{bmatrix} 2 & 3 \\ -1 & 2 \end{bmatrix}$, then show that $A^2 - 4A + 7I = 0$.
- Reactant ‘A’ underwent a decomposition reaction. The concentration of ‘A’ was measured periodically and recorded in the table given below:Based on the above data, predict the order of the reaction and write the expression for the rate law.
Time (Hours) [A] (M) 0 0.40 1 0.20 2 0.10 3 0.05 - CBSE CLASS XII - 2025
- Chemical Kinetics
- ‘But the game he is watching so intently is out of his reach.’ What are the factors that have made their game inaccessible to Saheb? (Lost Spring)
- CBSE CLASS XII - 2025
- Literature
- Calculate the mass of an $\alpha$-particle in atomic mass unit (u).
Given: Mass of a normal helium atom = \( 4.002603 \ \text{u} \)
Mass of carbon atom = \( 1.9926 \times 10^{-26} \ \text{kg} \)
- CBSE CLASS XII - 2025
- Atoms and Nuclei
View More Questions