Bond Energy MCQ

Below Bond Energy quiz are Multiple Choice Questions (MCQs) type Quiz. These Bond Energy MCQ Questions helps you to refresh your Bond Energy, you can see the correct option by clicking on it. .
  • 1. The following equation shows the formation of magnesium oxide from magnesium metal. Which statement is correct for this reaction?2Mg(s) + O2(g) → 2MgO(s) ΔH = -1204 kJ

    • 1204 kJ of energy are released for every mole of magnesium reacted
    • 602 kJ of energy are absorbed for every mole of magnesium oxide formed
    • 602 kJ of energy are released for every mole of oxygen reacted
    • 1204 kJ of energy are released for every two moles of magnesium oxide formed
  • 2. When the solids Ba(OH)2 and NH4SCN are mixed, a solution is produced and the temperature drops. Which statement about the energetics of this reaction is correct?

    • The reaction is endothermic and ΔH is negative
    • The reaction is endothermic and ΔH is positive
    • The reaction is exothermic and ΔH is negative
    • The reaction is exothermic and ΔH is positive