Respuesta :

maacastrobr

Answer:

225 mL of water must be added.

Explanation:

First we calculate how many HCl moles are there in 516 mL of a 0.191 M solution:

  • 516 mL * 0.191 M = 98.556 mmol HCl

Now we use that number of moles (that remain constant during the dilution process) to calculate the final volume of the 0.133 M solution:

  • 98.556 mmol / 0.133 M = 741 mL

We can calculate the volume of water required from the volume difference:

  • 741 mL - 516 mL = 225 mL

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