Given That O(g)+ E^- → O^-(g); ΔH = -142 KJ

question 117

Multiple Choice

Given that
O(g) + e^- → O^-(g) ; ΔH = -142 kJ
O(g) + 2e^- → O^2-(g) ; ΔH = 702 kJ
The enthalpy change for the reaction represented by the equation
O^-(g) + e^- → O^2-(g) is

• A)0 kJ.
• B)-560 kJ.
• C)-844 kJ.
• D)844 kJ.
• E)560 kJ.

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