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Which of the following reaction is correct?

Solution & Explanation

### Related Formula textAlkene + textHX rightarrow textAlkyl Halide quad text(Markovnikov's Rule) ### Core Logic The reaction involving the addition of textHI to the double bond follows electrophilic addition mechanism governed by Markovnikov's rule. The proton adds to the less substituted carbon to generate the more stable tertiary carbocation intermediate, which is then attacked by textI^- to yield the corresponding major tertiary alkyl iodide. ### Step 1: Verification of Choices Option (2) perfectly captures the sound execution of Markovnikov addition mechanics whereas the remaining choices present invalid product distributions or faulty reaction stoichiometry templates. ### Pattern Recognition Electrophilic addition cleanly forms the most substituted, most stable carbocation before halide attack takes place. ### Evaluation Rubric / Model Answer null ### Chapter Mix Class 11 Chemistry: Hydrocarbons

Reference Study Guides

More Hydrocarbons Previous-Year Questions — Page 5

Q87 jee_main_2024_31_jan_morning Kolbe's Electrolysis
Number of alkanes obtained on electrolysis of a mixture of CH_3COONa and C_2H_5COONa is
Numerical Answer. Answer: 3 to 3

Solution

### Core Logic Kolbe's electrolytic method generates free radicals at the anode, which then combine to form alkanes. The given mixture yields two types of carboxylate radicals which decarboxylate to form alkyl radicals: CH_3COONa rightarrow dotCH_3 C_2H_5COONa rightarrow dotC_2H_5 These radicals can couple in three different ways: 1. Cross coupling: dotCH_3 + dotC_2H_5 rightarrow CH_3-CH_2-CH_3 (Propane) 2. Self-coupling 1: dotCH_3 + dotCH_3 rightarrow CH_3-CH_3 (Ethane) 3. Self-coupling 2: dotC_2H_5 + dotC_2H_5 rightarrow CH_3-CH_2-CH_2-CH_3 (Butane) Thus, a total of 3 different alkanes are formed. ### Evaluation Rubric / Model Answer null ### Chapter Mix Class 11 Chemistry: Hydrocarbons

More Hydrocarbons Questions — jee_main_2024_29_january_evening

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