sblock Elements - Result Question 30

####40. The compound(s) formed upon combustion of sodium metal in excess air is (are)

(2007, 2M)

(a) $Na _2 O _2$

(b) $Na _2 O$

(c) $NaO _2$

(d) $NaOH$

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Answer:

Correct Answer: 40. (a,b)

Solution:

  1. When sodium metal is burnt in excess of air, mainly sodium peroxide $\left(Na _2 O _2\right)$ with little sodium oxide $\left(Na _2 O\right)$ are formed.


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