What is the concentration (M)of KCl in a solution made by mixing 30.0 mL of 0.100 M KCl with 50.0 mL of 0.100 M KCl?
A)0.100
B)0.0500
C)0.0333
D)0.0250
E)125

Question

Quizplus · Accepted Answer

The total volume of the solution is 30.0 mL + 50.0 mL = 80.0 mL. The total moles of KCl is (30.0 mL * 0.100 M) + (50.0 mL * 0.100 M) = 8.0 mmol. The concentration is 8.0 mmol / 80.0 mL = 0.100 M.

What Is the Concentration (M)of KCl in a Solution Made