The molarity of a solution obtained by mixing of with of is: — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
The molarity of a solution obtained by mixing $750 \text{ mL}$ of $0.5 \text{ M } HCl$ with $250 \text{ mL}$ of $2 \text{ M } HCl$ is:
Answer: A
💡 Solution & Explanation
$M_{mix} = \frac{M_1V_1 + M_2V_2}{V_1 + V_2} = \frac{(0.5 \times 750) + (2 \times 250)}{1000} = \frac{375 + 500}{1000} = 0.875 \text{ M}$.
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