of a mixture of and requires of for complete reaction. Find the mole percentage of in the mixture. — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
$0.5 \text{ moles}$ of a mixture of $CO$ and $CO_2$ requires $200 \text{ mL}$ of $0.5 \text{ M } NaOH$ for complete reaction. Find the mole percentage of $CO$ in the mixture.
Answer: 90
💡 Solution & Explanation
$CO_2 + 2NaOH \rightarrow Na_2CO_3 + H_2O$. <br>$\text{moles } NaOH = 0.1 \Rightarrow \text{moles } CO_2 = 0.05$. <br>$\text{moles } CO = 0.5 - 0.05 = 0.45$. <br>$\% CO = (0.45 / 0.5) \times 100 = 90\%$. [4, 25]
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