AP EAMCET202319 May 2023Morning ShiftChemistryHydrogenActual
Given below are two statements Assertion (A): Protium and deuterium differ in their rates of reactions. Reason (R): They have different enthalpies of bond dissociation. The correct answer is
Options
- ABoth (A) and (R) are correct and, (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of ( A )
- C(A) is correct but (R) is incorrect
- D(A) is incorrect but (R) is correct
Correct answer
A. Both (A) and (R) are correct and, (R) is the correct explanation of (A)
Step-by-step solution
H - H bond enthalpy =435.88 ~kJ ~mol ⁻¹ D - D bond enthalpy =443.35 ~kJ ~mol ⁻¹ . Due to a difference in their bond dissociation enthalpies, they undergo chemical reactions at different rates. Thus, both, (A) and (R) are true and (R) correctly explains (A).