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The standard enthalpy of formation of Ca2+ (g) (∆H = 1934 kJ/mol)

The first ionization of Ca H=590 kJ/mol
The second ionization of Ca H=1151 kJ/mol
I need to write an equation for the process of the standard enthalpy of formation of Ca2+. Can you help and explain please?

Respuesta :

drpelezo

Answer:

see explanation

Explanation:

The process of ionization to produce cations is endothermic. For formation of Ca⁺² two ionization steps need be illustrated as follows...

1st ionization step: Ca° + 590Kj => Ca⁺ + e⁻

2nd ionization step: Ca⁺ + 1151Kj => Ca⁺² + e⁻

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Net Ionization Rxn: Ca° + 1741Kj => Ca⁺² + 2e⁻

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