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Formation of O- from O is …

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Formation of O- from O is an exothermic reaction. Explain why?

Posted by Bhanvi Chauhan 5 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Jai Adithya 5 years, 2 months ago

Because it is a exothermic reaction

Yogita Ingle 5 years, 2 months ago

Electron gain enthalphy for oxygen is negative because oxygen being an electronegative atom can easily accept electron.

But gaining one more electron to O₂ will mean much more stability,so it is be an exothermic reaction.This expectation is true if we consider a neutral species but as O⁻ is negligibely charged adding another negativelly charged species will be diffcult as the like charges will repel each other ,so in order to force the electronn to fuse with O⁻ion we supply energy in form of heat .This males it endothermic.

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