KCET · Chemistry · Hydrocarbons
Methane can be converted into ethane by the reactions
- A chlorination followed by the reaction with alcoholic KOH
- B chlorination followed by the reaction with aqueous \(\mathrm{KOH}\)
- C chlorination followed by Wurtz reaction
- D chlorination followed by decarboxylation
Answer & Solution
Correct Answer
(C) chlorination followed by Wurtz reaction
Step-by-step Solution
Detailed explanation
The chlorination of methane is carried out by treating it with chlorine in presence of ultraviolet light or by heating the reaction mixture to \(520-670 \mathrm{~K}\).
\(\underset{\text { methane }}{\mathrm{CH}_{4}}+\mathrm{Cl}_{2} \stackrel{\text { hv or } \Delta}{\longrightarrow} \underset{\text { methyl chloride }}{\mathrm{CH}_{3} \mathrm{Cl}}+\mathrm{HCl}\)
This methyl chloride react with metallic \(\mathrm{Na}\) in presence of dry ether to form symmetrical alkane the number of carbon atoms (ethane). This reaction is called Wurtz reaction.
\(\underset{\text { methane }}{\mathrm{CH}_{4}}+\mathrm{Cl}_{2} \stackrel{\text { hv or } \Delta}{\longrightarrow} \underset{\text { methyl chloride }}{\mathrm{CH}_{3} \mathrm{Cl}}+\mathrm{HCl}\)
This methyl chloride react with metallic \(\mathrm{Na}\) in presence of dry ether to form symmetrical alkane the number of carbon atoms (ethane). This reaction is called Wurtz reaction.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- What amount of dioxygen (in gram) contains \( 1.8 \times 10^{22} \) molecules ?KCET 2015 Easy
- Presence of halogen in organic compounds can be detected usingKCET 2007 Easy
- 8.8 g of monohydric alcohol added to ethyl magnesium iodide in ether liberates \(2240 \mathrm{~cm}^3\) of ethane at STP. This monohydric alcohol when oxidised using pyridinium-chloro-chromate, forms a carbonyl compound that answers silver mirror test (Tollen's test). The monohydric alcohol isKCET 2024 Hard
- The oxide of an element whose electronic configuration is \(1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{1}\) isKCET 2009 Easy
- For a reaction having three steps, the overall rate constant is \(k = \dfrac{k_1 k_2}{k_3}\). The values of \(E_{a_1}, E_{a_2}\) and \(E_{a_3}\) (activation energies stepwise) are \(40\), \(50\) and \(60\) kJ mol\(^{-1}\) respectively. Then the overall \(E_a\) (activation energy) of the reaction is ____KCET 2026 Medium
- A miscible mixture of \( \mathrm{C}_{6} \mathrm{H}_{6}+\mathrm{CH} \mathrm{Cl}_{3} \) can be separated byKCET 2016 Easy
More PYQs from KCET
- Spheres of iron and lead having same mass are completely immersed in water. Density of lead is more than that of iron. Apparent loss of weight is \(w_{1}\) for iron sphere and \(w_{2}\) for lead sphere, Then, \(\frac{w_{1}}{w_{2}}\) isKCET 2012 Hard
- The area of the region bounded by the lines \( y=m x, x=1, x=2 \), and \( x \) axis is \( 6 \) sq. units, then
' \( \mathrm{m} \) ' isKCET 2014 Easy - If \(\alpha\) and \(\beta\) are different complex numbers with \(|\beta|=1\), then \(\left|\frac{\beta-\alpha}{1-\bar{\alpha} \beta}\right|\) is equal toKCET 2012 Easy
- If \( A=\left[\begin{array}{cc}2 & -2 \\ -2 & 2\end{array}\right] \), then \( A^{n}=2^{k} A \), where \( K= \)KCET 2018 Medium
- The number of solutions of \(\frac{d y}{d x}=\frac{y+1}{x-1}\), when \(y(\mathrm{l})=2\) isKCET 2021 Medium
- The number of six membered and five membered rings in Buckminster fullerene respectively isKCET 2021 Easy