Question

Why the reaction of sodium with oxygen is spontaneous?

Answer 1

Hola.....
here is ur answer....

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sodium is a highly reactive metal.....
it reacts with oxygen and burns.....so it reacts spontaneously with oxygen.....
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Answer 2

When burning sodium (Na) in oxygen (O2), you get sodium oxide (Na2O) and/or sodium peroxide (Na2O2). At high pressures, you can additionally get sodium superoxide (NaO2).

4 Na + O2 → 2 Na2O, and then partially 2 Na2O + O2 → 2 Na2O2.

Under normal conditions, approximately 20% of the mixture is Na2O2.

6 Na + 2 O2 → 2 Na2O + Na2O2

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