toricdn878 toricdn878
  • 20-04-2020
  • Chemistry
contestada

What is the molarity of a stock solution if 60 mL were used to make 150 mL of a .5M solution

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joseaaronlara
joseaaronlara joseaaronlara
  • 20-04-2020

Answer:

The answer to your question is 1.25 M

Explanation:

Data

Molarity 1 = ?

Volume 1 = 60 ml

Molarity 2 = 0.5 M

Volume 2 = 150 ml

Process

1.- Write the dilution formula

       Molarity 1 x Volume 1 = Molarity 2 x Volume 2

-Solve for Molarity 1

       Molarity 1 = Molarity 2 x Volume 2 / Volume 1

-Substitution

        Molarity 1 = (0.5)(150) / 60

-Simplification

        Molarity = 75 / 60

-Result

        Molarity = 1.25 M

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