$ {B2H6}$ reacts with $ {(CH3)3N}$ to produce
- $\ce{BH^{+}_3N^{-} (CH_3)_3 }$
- $\ce{ B_2H^{+}_6 N^{-} (CH_3)_2 CH_3 . BH_3}$
- $\ce{ (CH_3)_3 N^{+} BH_3}$
- $\ce{ BH_3 N^{+} (CH_3)_2 CH_3BH_3}$
The Correct Option is C
Solution and Explanation
$\underset{\text{Trimethyl amine}}{ {2(CH3)3N}}+$ $\underset{\text{Diborane}}{ {B2H6}} {->}$ $\underset{\text{Complex}}{ {2(CH3)3 \overset{+}{N} \,BH3}}$
in this reaction trimethyl amine, reacts readily with diborane and form a $2(CH_3)_3\, \overset{+}{N} \,BH_3$ complex.
Top Questions on Acids and Bases
- A weak acid with pKa 5.9 and weak base with pKb 5.8 are mixed in equal proportions. pH of the resulting solution is
- KCET - 2023
- Chemistry
- Acids and Bases
- If dissociation constant of acetic acid is \(1.6×10^{-5}\), the hydrolysis constant of sodium acetate is
- WBJEE JENPAS UG - 2023
- Chemistry
- Acids and Bases
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R)
Assertion (A): Ketoses give Seliwanoff's test faster than Aldoses
Reason (R): Ketoses undergo $\beta$-elimination followed by formation of furfural
In the light of the above statements, choose the correct answer from the options given below:- JEE Main - 2023
- Chemistry
- Acids and Bases
- Incorrect statement for the use of indicators in acid-base titration is :
- JEE Main - 2023
- Chemistry
- Acids and Bases
Given below are two statements : one is labelled as Assertion (A) and the other is labelled asReason (R)
Assertion (A): $\alpha$-halocarboxylic acid on reaction with dil $NH _3$ gives good yield of $\alpha$-aminocarboxylic acid whereas the yield of amines is very low when prepared from alkyl halides
Reason (R): Amino acids exist in zwitter ion form in aqueous medium
In the light of the above statements, choose the correct answer from the options given below :- JEE Main - 2023
- Chemistry
- Acids and Bases
Questions Asked in UPSEE exam
- A carnot engine takes 300 calories of heat at 500 K and rejects 150 calories of heat to the sink. The temperature of the sink is
- UPSEE - 2019
- Heat Transfer
- Which of the following is not permissible arrangement of electrons in an atom.
- UPSEE - 2019
- Quantum Mechanical Model of Atom
- If det $\begin{bmatrix}1&1&2\\ 2&4&9\\ t&t^{2}&1+t^{3}\end{bmatrix} = 0 $ , then the values of t are
- UPSEE - 2019
- Properties of Determinants
- The imaginary part of $\left( \frac{1}{2} + \frac{1}{2}i\right)^{10} $ is
- UPSEE - 2019
- Complex Numbers and Quadratic Equations
- Let S be the set of all right angled triangles with integer sides forming consecutive terms of an arithmetic progression. The number of triangles in S with perimeter less than 30 is
- UPSEE - 2019
- Arithmetic Progression
Concepts Used:
Acids and Bases
Acid is any hydrogen-containing substance that is capable of donating a proton (hydrogen ion) to another substance. Base is an ion or molecule capable of accepting a hydrogen ion from acid.
Physical Properties of Acids and Bases
| Physical Properties | ACIDS | BASES |
| Taste | Sour | Bitter |
| Colour on Litmus paper | Turns blue litmus red | Turns red litmus blue |
| Ions produced on dissociation | H+ | OH- |
| pH | <7 (less than 7) | >7 (more than 7) |
| Strong acids | HCl, HNO3, H2SO4 | NaOH, KOH |
| Weak Acids | CH3COOH, H3PO4, H2CO3 | NH4OH |
Chemical Properties of Acids and Bases
| Type of Reaction | Acid | Bases |
| Reaction with Metals | Acid + Metal → Salt + Hydrogen gas (H2) E.g., Zn(s)+ dil. H2SO4 → ZnSO4 (Zinc Sulphate) + H2 | Base + Metal → Salt + Hydrogen gas (H2) E.g., 2NaOH +Zn → Na2ZnO2 (Sodium zincate) + H2 |
| Reaction with hydrogen carbonates (bicarbonate) and carbonates | Metal carbonate/Metal hydrogen carbonate + Acid → Salt + Carbon dioxide + Water E.g., HCl+NaOH → NaCl+ H2O 2. Na2CO3+ 2 HCl(aq) →2NaCl(aq)+ H2O(l) + CO2(g) 3. Na2CO3+ 2H2SO4(aq) →2Na2SO4(aq)+ H2O(l) + CO2(g) 4. NaHCO3+ HCl → NaCl+ H2O+ CO2 | Base+ Carbonate/ bicarbonate → No reaction |
| Neutralisation Reaction | Base + Acid → Salt + Water E.g., NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l) | Base + Acid → Salt + Water E.g., CaO+ HCl (l) → CaCl2 (aq)+ H2O (l) |
| Reaction with Oxides | Metal oxide + Acid → Salt + Water E.g., CaO+ HCl (l) → CaCl2 (aq)+ H2O (l) | Non- Metallic oxide + Base → Salt + Water E.g., Ca(OH)2+ CO2 → CaCO3+ H2O |
| Dissolution in Water | Acid gives H+ ions in water. E.g., HCl → H+ + Cl- HCl + H2O → H3O+ + Cl– | Base gives OH- ions in water. |
Read more on Acids, Bases and Salts