JEE Advance - Chemistry (2009 - Paper 1 Offline - No. 1)
The compound(s) formed upon combustion of sodium metal in excess air is (are)
Na2O2
Na2O
NaO2
NaOH
Explanation
The compound(s) formed upon the combustion of sodium metal in the excess air is sodium peroxide (Na2O2) and sodium oxide (Na2O).
$$ \begin{aligned} & 4 \mathrm{Na}+\mathrm{O}_2 \rightarrow 2 \mathrm{Na}_2 \mathrm{O} \\\\ & 2 \mathrm{Na}+\mathrm{O}_2 \rightarrow \mathrm{Na}_2 \mathrm{O}_2 \end{aligned} $$
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