# What volume of 12 M HCl solution is needed to prepare 5 liters of 0.0250 M solution?

Jul 10, 2016

$0.0104 L$ of 12 M HCl is needed.

#### Explanation:

In order to get the answer, you have to use the dilution equation:

${M}_{1}$ is the initial concentration
${V}_{1}$ is the initial volume
${M}_{2}$ is the final concentration
${V}_{2}$ is the final volume

* TIP. * Whenever you are going from a highly concentrated substance to a less concentrated substance by increasing the volume of the solvent (dilution) you always use this equation.

We know ${M}_{1}$,${M}_{2}$ , and ${V}_{2}$ . All we have to do rearrange the equation to solve for the ${V}_{1}$:

$\frac{{M}_{2} \times {V}_{2}}{M} _ 1$= ${V}_{1}$

$\left(0.0250 \cancel{\text{M" xx5L)/(12cancel"M}}\right)$ = $0.0104 L$