9 Which equation represents an enthalpy change that is the average bond energy of the C–H bondin methane?A 41 C(g) + H(g)  41 CH4 (g)B 41 CH4 (g)  41 C(g) + H(g)C CH 4 (g)  C(g) + 4H(g)D CH 4 (g)  CH 3 (g) + H(g)

Which equation represents the reaction for which the enthalpy change, ∆H, is the meanbond enthalpy of the C–H bond?A ¼CH 4(g) → ¼C(g) + H(g)B CH 4(g) → C(s) + 2H 2 (g)C CH 4(g) → C(g) + 4H(g)D CH 4(g) → C(g) + 2H2 (g)

Which of the following bond enthalpies is not an average bond enthalpy?C – HC = OH – HO – H

Which equation represents the average bond enthalpy of the Si−H bond in SiH 4 ?A. SiH 4 (g) → SiH3 (g) + H (g)B. 14 SiH 4 (g) → 14 Si (g) + H (g)C. SiH 4 (g) → SiH3 (g) + 12 H 2 (g)D. SiH 4 (g) → Si (g) + 4H (g)

Given the following bond dissociation energies, calculated the enthalpy of the following reaction.H-C≡C-H + 2H2 → H3C-CH3C-C            350 kJ/molC≡C           807 kJ/molC-H            410 kJ/molH-H            436 kJ/molHint: There are 2 H-H bonds on the left and a total of 6 C-H bonds on the right.Group of answer choices-111 kJ/mol-211 kJ/mol-311 kJ/mol-11 kJ/mol

The bond enthalpies for six selected chemical bonds are shown below.Bond Bond enthalpyΔH°298 (kJ/mol)H―H 436C―H 413C=O 532N―H 335O―H 499O=O 495For a reaction in which 2 moles of H2(g) reacts with 1 mole of O2(g) to form 2 moles of H2O(g), what is the heat of the reaction?A.1367 kJB.369 kJC.−629 kJD.−1996 kJ