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If 7 mL of water is added to 3 mL of a 0.50 M KOH solution, the concentration of KOH is changed to.

Question:

If 7 mL of water is added to 3 mL of a 0.50 M KOH solution, the concentration of KOH is changed to _____.

Diluting Solutions:

One way to dilute solutions is to add more volume of the solvent to the existing solution. This way, the volume of the solution changes but the amount of solute remains the same. The increase in the volume relates to the decrease in the concentration.

Answer and Explanation:

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Determine the new concentration, {eq}\displaystyle M_2 {/eq}, of the KOH solution at a new volume of {eq}\displaystyle V_2= 7\ mL+ 3\ mL = 10\...

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Calculating Dilution of Solutions

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Chapter 8 / Lesson 5
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Learn what a solution is and how to properly dilute a new solution from a stock solution. Learn the dilution equation that combines molarity, the volume of stock solution and desired solution to determine how much stock solution is needed for the new solution.


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