Mass of oxygen reacted with carbon is — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

If $CO$ is 0.6 mol and $CO_2$ is 0.4 mol:<br>C + 1/2 $O_2$ → $CO$ (0.6 mol $CO$ requires 0.3 mol $O_2$).<br>C + $O_2$ → $CO_2$ (0.4 mol $CO_2$ requires 0.4 mol $O_2$).<br>Total $O_2$ reacted = 0.3 + 0.4 = 0.7 mol. Mass of $O_2$ = 0.7 × 32 g/mol = 22.4 g.