The molar mass of the water insoluble product formed from the fusion of chromite ore \(\left(\mathrm{FeCr}_2…
The molar mass of the water insoluble product formed from the fusion of chromite ore \(\left(\mathrm{FeCr}_2 \mathrm{O}_4\right)\) with \(\mathrm{Na}_2 \mathrm{CO}_3\) in presence of \(\mathrm{O}_2\) is _______ \(\mathrm{g} \mathrm{mol}^{-1}\).
Solution
$\mathrm{FeCr}_2 \mathrm{O}_4+\mathrm{Na}_2 \mathrm{CO}_3+\mathrm{O}_2 \rightarrow \mathrm{Na}_2 \mathrm{CrO}_4+\mathrm{Fe}_2 \mathrm{O}_3+\mathrm{CO}_2$ Insoluble product will be $\mathrm{Fe}_2 \mathrm{O}_3$ molar mass $=56 \times 2+16 \times 3$ $\begin{aligned} & =112+48 \\ & =160 \end{aligned}$