1. Name a compound that will be required to obtain butane using K… - Vidyadip

Question

Name a compound that will be required to obtain butane using Kolbe's electrolytic method.
Why does benzene show electrophilic substitution easily?
Complete the following:

$\text{CH}_3-\text{C}=\text{CH}_2+\text{H}_2\text{O}\xrightarrow{\text{H}^+}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3$

✓

Answer

CH₃CH₂COONa (sodium propanoate), on electrolysis will give butane.
It is because benzene has $6\pi$ electrons, therefore, it attracts electrophile and undergo electrophilic substitution reactions.
$\text{CH}_3-\text{C}=\text{CH}_2+\text{H}_2\text{O}\xrightarrow{\text{H}^+}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3\\ \ \ \ \ \ _{2-\text{Methyl propene}}\\ \ \ \ \ \ \ \ \ \ \ \ \ \text{OH}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\ \text{CH}_3-\text{C}-\text{CH}_3\\ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3\\ \ \ \ \ \ _{2-\text{Methyl propan-2-ol}}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "3 Marks Question" from Hydrocarbons→Hydrocarbons — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

An alkyl halide 'A' of formula C₆H₁₃Cl on treatment with alcoholic KOH gives two isomeric alkenes 'B' and 'C' with molecular formula C₆H₁₂. Both alkenes on hydrogenation give 2, 3-dimethyl butane. Predict the structure of ‘A’, 'B' and 'C'.

Match the intermediates given in Column I with their probable structure in Column II.

	Column I		Column II
(i)	Free radical	(a)	Trigonal planar
(ii)	Carbocation	(b)	Pyramidal
(iii)	Carbanion	(c)	Linear

What is the oxidation number of 'S'in H₂SO₅
Balance the following equation:

$\text{Zn}\text{(s)}+\text{NO}_3^-\text{(aq)}\xrightarrow{ \ \ \ \ \ \ \ \ }\text{Zn}^{2+}\text{(aq)}+\text{NH}_4^+\text{(aq)}+\text{H}^+$ (Acidic medium)

0.3780g of an organic chloro compound gave 0.5740g of silver chloride in Carius estimation. Calculate the percentage of chlorine present in the compound.

The enthalpy of vaporisation of liquid diethyl ether (C₂H₅)₂O is 26.0kJ mol^-1 at its boiling point (35.0°C). Calculate $\Delta\text{S}^\circ$ for the conversion of:

Liquid to vapour.
Vapour to liquid at 35°C.

Explain the shape of BrF₅.

The quantum numbers of six electrons are given below. Arrange them in order of increasing energies. If any of these combination(s) has/ have the same energy lists:

$\text{n}=4,\text{l}=2,\text{m}_\text{l}=-2,\text{m}_{\text{s}}=-\frac{1}{2}$
$\text{n}=3,\text{l}=2,\text{m}_\text{l}=1,\text{m}_{\text{s}}=+\frac{1}{2}$
$\text{n}=4,\text{l}=1,\text{m}_\text{l}=0,\text{m}_{\text{s}}=+\frac{1}{2}$
$\text{n}=3,\text{l}=2,\text{m}_\text{l}=-2,\text{m}_{\text{s}}=-\frac{1}{2}$
$\text{n}=3,\text{l}=1,\text{m}_\text{l}=-1,\text{m}_{\text{s}}=+\frac{1}{2}$
$\text{n}=4,\text{l}=1,\text{m}_\text{l}=0,\text{m}_{\text{s}}=+\frac{1}{2}$

Chlorophyll present in green leaves of plants absorbs light at 4.620 × 10¹⁴Hz. Calculate the wavelength of radiation in nanometer. Which part of the electromagnetic spectrum does it belong to?

Dual behaviour of matter proposed by de Broglie led to the discovery of electron microscope often used for the highly magnified images of biological molecules and other type of material. If the velocity of the electron in this microscope is 1.6 × 10⁶ms^–1, calculate de Broglie wavelength associated with this electron.

Lifetimes of the molecules in the excited states are often measured by using pulsed radiation source of duration nearly in the nano second range. If the radiation source has the duration of 2 ns and the number of photons emitted during the pulse source is 2.5 × 10¹⁵, calculate the energy of the source.