To of , of is added. The concentration of in the final solution is: — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
To $50 \text{ mL}$ of $0.1 \text{ M } AgNO_3$, $50 \text{ mL}$ of $0.1 \text{ M } HCl$ is added. The concentration of $NO_3^-$ in the final solution is:
Answer: B
💡 Solution & Explanation
$\text{Initial moles } NO_3^- = 50 \times 0.1 = 5 \text{ mmol}$. <br>$\text{Final volume} = 100 \text{ mL}$. <br>$\text{Concentration} = 5 \text{ mmol} / 100 \text{ mL} = 0.05 \text{ M}$.
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