of an acid requires of for complete neutralization. What is the value of ? — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
$0.1 \text{ mole}$ of an acid $H_3PO_x$ requires $0.2 \text{ mole}$ of $NaOH$ for complete neutralization. What is the value of $x$?
Answer: 3
💡 Solution & Explanation
$\text{Basicity} = \frac{\text{moles of NaOH}}{\text{moles of acid}} = \frac{0.2}{0.1} = 2$. <br>Among oxyacids of phosphorus with formula $H_3PO_x$, $H_3PO_3$ (phosphorous acid) is dibasic. Thus, $x = 3$.
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