What volume of 1.27 M HCl is required to prepare 197.4 mL of 0.456 M HCl?

Question

Quizplus · Accepted Answer

To find the volume of the original solution needed, use the dilution formula $M_1V_1 = M_2V_2$, where $M_1$ and $V_1$ are the molarity and volume of the initial solution, and $M_2$ and $V_2$ are the molarity and volume of the final solution. Plugging in the given values: $1.27 \times V_1 = 0.456 \times 197.4$. Solving for $V_1$ gives approximately 70.9 mL.

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