16. Indicate what the entries O─I and O1─, O─II, O2─ mean. Consider the following thermochemical equations:
O(r) e─∞ = O─(r); ─148 kJ
O─(r) e─∞ = O2─(r); 780 kJ
Make a conclusion about the reality of the existence of ions O─ and O2─. What is another name for the ΔH° values of these reactions? Calculate the standard enthalpy of formation of the gaseous O2─ ion. Why can't the O2─ ion exist in an aqueous solution?

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