What is the final concentration of a solution prepared by adding water to 50.0 mL of 1.5 M NaOH to make 1.00 L of solution?
A)0.075 M
B)0.030 M
C)1.5 M
D)7.5 M
E)30 M

Question

Quizplus · Accepted Answer

To find the final concentration, we need to use the dilution equation:
M1V1 = M2V2
where 
M1 = 1.5 M (initial concentration)
V1 = 50.0 mL = 0.050 L (initial volume)
M2 = final concentration (what we're trying to find)
V2 = 1.00 L (final volume)

Rearranging the equation gives:
M2 = (M1V1)/V2 = (1.5 M x 0.050 L)/1.00 L = 0.075 M

Therefore, the final concentration of the solution is 0.075 M.

What Is the Final Concentration of a Solution Prepared by Adding