Question

Write equation for the reaction of:

1.Sodium and oxygen
2.Magnesium with oxygen

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Answer 1

Answer:

(a) 4Na (s)  +  O2 (g)  →  2Na2O (s)

Sodium       oxygen      Sodium oxide

(metal)         (From air)   (Basic oxide)

(b)

2Mg(s)       +      O2 (g)    →     2MgO (s)

Magnesium      oxygen            magnesium oxide

(metal)              (From air)         (Basic oxide)

Answer 2

Answer:

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1. 4 Na + O2 --> 2 Na2O

2. 2Mg + O2 → 2MgO.