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Oxidation and Reduction

First electro...

Question

First electron gain enthalpy of oxygen is exothermic while the second is endothermic in nature. Justify.

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Solution

When we add another electron to O- Then it feel more repulsion due to valence shell electrons present in oxygen so it absorb energy to hold 2 electron Endothermic

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Q. Would you expect the second electron gain enthalpy of oxygen as positive, more negative or less negative than the first? Justify your answer.

Q. When the first electron gain enthalpy

(Δ_{e g} H)

- 141 k J / m o l

, its second electron gain enthalpy is:

Q. Formation of the cation is endothermic whereas formation of anion as exothermic. Justify.

Q. Would you expect the second electron gain enthalpy of O as positive, more than negative or less negative than the first? Justify your answer.
What is the basic difference between the terms electron gain enthalpy and electronegativity?

Q. The second electron gain enthalpy for oxygen is .

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