Electron gain enthalpy

Chemistry Level 2

The first ionization potential of Na is 5.1 eV. The value of electron gain enthalpy of Na^+ will be:

+2.55 eV -2.55 eV -5.1 eV -10.2 eV

Sanjay Balaji by Sanjay Balaji , 21, India

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2 solutions

Sanjay Balaji
Apr 16, 2014

Here the backward reaction releases same amount of energy and known as Electron gain enthalpy.

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Bhaskar Pandey
Aug 22, 2017

First ionisation energy of Na is 5.1eV, which means that if we apply 5.1eV to Na it will become a unipositive ion i.e, Na+. Now election gain enthalpy tells us about the energy applied to make Na+ a neutral atom. But it will take electron without applying energy moreover it will become stable and Emit out the energy absorbed earlier which is 5.1eV.

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