Chemistry · Rate of a chemical reaction, factors affecting the rate of reactions: concentration, temperature, pressure and catalyst
Assertion Chlorine reacts more rapidly with in comparision to Reason bond is str
Assertion Chlorine reacts more rapidly with \( \boldsymbol{H}_{2}, \) in comparision to \( \boldsymbol{O}_{\mathbf{2}} \) Reason \( D-C l \) bond is stronger in comparison to \( H-C l \) bond
- A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- C. Assertion is correct but Reason is incorrect
- D. Both Assertion and Reason are incorrect
Step-by-step solution
The assertion is correct: chlorine reacts more rapidly with H₂ than with O₂ because Cl₂ readily reacts with H₂ (e.g., in light) but does not readily react with O₂ under normal conditions. The reason is also correct: the D–Cl bond is stronger than the H–Cl bond due to the lower zero-point energy of the heavier isotope. However, the reason does not explain the assertion, as the comparison is between H₂ and O₂, not between H₂ and D₂. Therefore, both are correct, but the reason is not the correct explanation.
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