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

1 Answer
Kayla
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:
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#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#:

#(M_2xxV_2)/M_1#= #V_1#

#(0.0250 cancel"M" xx5L)/(12cancel"M") # = #0.0104L#

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