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Statement-1: Vinyl chloride is more reac...

Statement-1: Vinyl chloride is more reactive than ethylene.
and
Statement-2: Addition of HBr on vinyl chloride follows Markovnikoff's addition.
(a) Statement-1 is true, Statement-2 is true, Statement-2 is a correct explanation for Statement-1
(b) Statement-1 is true, Statement-2 is true, Statement-2 is not a correct explanation for Statement -1
(c) Statement -1 is true, Statement -2 is false
(d) Statement -1 is false, Statement -2 is true

Text Solution

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The correct Answer is:
To solve the question, we need to analyze both statements regarding vinyl chloride and ethylene. ### Step 1: Analyze Statement 1 **Statement 1:** Vinyl chloride is more reactive than ethylene. - **Vinyl Chloride Structure:** Vinyl chloride (C2H3Cl) has a double bond between two carbon atoms and a chlorine atom attached to one of the carbons. - **Ethylene Structure:** Ethylene (C2H4) has a double bond between two carbon atoms with no substituents. - **Reactivity Comparison:** The presence of the chlorine atom in vinyl chloride exerts a -I (inductive) effect, withdrawing electron density from the double bond. This makes the π electrons less available for reactions, thus reducing the reactivity of vinyl chloride compared to ethylene, which has no such electron-withdrawing group. **Conclusion for Statement 1:** This statement is **false**. ### Step 2: Analyze Statement 2 **Statement 2:** Addition of HBr on vinyl chloride follows Markovnikov's addition. - **Markovnikov's Rule:** This rule states that in the addition of HX to an alkene, the hydrogen atom will attach to the carbon with the greater number of hydrogen atoms (the less substituted carbon), while the halide (Br in this case) will attach to the more substituted carbon. - **Reaction Mechanism:** When HBr is added to vinyl chloride: - The double bond reacts with HBr, leading to the formation of a carbocation. - The more stable secondary carbocation is formed at the carbon attached to chlorine. - The bromine ion then attacks the carbocation, leading to the product where hydrogen is added to the carbon with more hydrogen atoms. **Conclusion for Statement 2:** This statement is **true**. ### Final Conclusion - **Statement 1:** False - **Statement 2:** True Thus, the correct answer is **(d) Statement 1 is false, Statement 2 is true**. ---
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