What will be the final volume of a solution prepared by diluting 25 ml of 8.25 m sodium hydroxide to a concentration of 2.40 m?

This is an example of dilution. To solve this problem, we must remember that:

number of moles of solute before dilution = number of moles of solute after dilution

moles is equivalent to the product of Volume and Molarity, therefore:

Mi Vi = Mf Vf

8.25 M * 25 mL = 2.40 M * Vf

Vf = 85.9375 mL

The final volume of solution is about 86 mL.

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