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Assertion (A) Chlorine reacts more rapid...

Assertion (A) Chlorine reacts more rapidly with `H_(2)` in comparison to `D_(2)`.
Reason (R ) D -CL bond is stronger in comparison to H - Cl bond .

A

If both Assertion and Reason are true and Reason is correct explanation of Assertion.

B

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C

If Assertion is true but Reason is false.

D

If both Assertion and Reason and false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the assertion and reason question, we will analyze both statements step by step. ### Step 1: Analyze the Assertion **Assertion (A):** Chlorine reacts more rapidly with \( H_2 \) in comparison to \( D_2 \). - **Explanation:** Chlorine (Cl) is a reactive halogen that can react with hydrogen (H) to form hydrogen chloride (HCl). Deuterium (D) is an isotope of hydrogen, which means it has one neutron in addition to the one proton that hydrogen has. The presence of this additional neutron increases the mass of deuterium compared to hydrogen. This difference in mass affects the reaction rates due to what is known as the "isotope effect." Generally, reactions involving lighter isotopes (like hydrogen) tend to occur faster than those involving heavier isotopes (like deuterium). ### Step 2: Analyze the Reason **Reason (R):** The D-Cl bond is stronger in comparison to the H-Cl bond. - **Explanation:** The bond strength between deuterium and chlorine (D-Cl) is indeed stronger than that between hydrogen and chlorine (H-Cl). This is due to the fact that the bond strength is influenced by the mass of the atoms involved. The D-Cl bond has a greater mass than the H-Cl bond, which can lead to a stronger bond due to less vibrational energy in the heavier bond. However, the reason provided does not explain why chlorine reacts more rapidly with hydrogen compared to deuterium. ### Conclusion - Both the assertion and reason are true statements. However, the reason does not correctly explain the assertion. The assertion is based on the isotopic effect, while the reason discusses bond strength. ### Final Answer - **Assertion is true.** - **Reason is true, but it is not the correct explanation for the assertion.** ---
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