sblock Elements 1 Question 22
40. The compound(s) formed upon combustion of sodium metal in excess air is (are)
(2007, 2M)
(a) $\mathrm{Na}{2} \mathrm{O}{2}$
(b) $\mathrm{Na}_{2} \mathrm{O}$
(c) $\mathrm{NaO}_{2}$
(d) $\mathrm{NaOH}$
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Solution:
- When sodium metal is burnt in excess of air, mainly sodium peroxide $\left(\mathrm{Na}{2} \mathrm{O}{2}\right)$ with little sodium oxide $\left(\mathrm{Na}_{2} \mathrm{O}\right)$ are formed.
