Enthalpy change for the reaction, 4H(g) → 2H2(g) is –869.6 kJ. The dissociation
energy of H – H bond is
(1) +217.4 kJ
(2) –434.8 kJ
(3) –869.6 kJ
(4) +434.8 kJ

Question

Enthalpy change for the reaction, 4H(g) → 2H2(g) is –869.6 kJ. The dissociation energy of H – H bond is (1) +217.4 kJ (2) –434.8 kJ (3) –869.6 kJ (4) +434.8 kJ

Aditi Chauhan · Answer

Sol: The dissociation energy of H – H bond is 869.6/2 = 434.8 KJ Answer : (4)

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Enthalpy change for the reaction, 4H(g) → 2H2(g) is –869.6 kJ. The dissociation energy of H – H bond is (1) +217.4 kJ (2) –434.8 kJ (3) –869.6 kJ (4) +434.8 kJ

Enthalpy change for the reaction, 4H(g) → 2H2(g) is –869.6 kJ. The dissociation
energy of H – H bond is
(1) +217.4 kJ
(2) –434.8 kJ
(3) –869.6 kJ
(4) +434.8 kJ

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Enthalpy change for the reaction, 4H(g) → 2H2(g) is –869.6 kJ. The dissociation energy of H – H bond is (1) +217.4 kJ (2) –434.8 kJ (3) –869.6 kJ (4) +434.8 kJ

Enthalpy change for the reaction, 4H(g) → 2H2(g) is –869.6 kJ. The dissociation energy of H – H bond is (1) +217.4 kJ (2) –434.8 kJ (3) –869.6 kJ (4) +434.8 kJ

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Enthalpy change for the reaction, 4H(g) → 2H2(g) is –869.6 kJ. The dissociation
energy of H – H bond is
(1) +217.4 kJ
(2) –434.8 kJ
(3) –869.6 kJ
(4) +434.8 kJ