For the Reaction: 2A + B₂ → 2AB ΔH =

question 117

Multiple Choice

For the reaction: 2A + B₂ → 2AB ΔH = +50.0 kJ.

• A) The reaction is endothermic.
• B) Heat is released to the surroundings.
• C) The standard enthalpy of formation for AB is 50.0 kJ.
• D) The bond energy for each A-B bond is 50.0 kJ.
• E) The molecule AB contains less energy than A or B₂.

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