What will be the final volume of a solution prepared by diluting 25 mL of 8.25 M sodium hydroxide to a concentration of 2.40 M?
A)330 mL
B)210 mL
C)86 mL
D)60 mL
E)7.3 mL

Question

Quizplus · Accepted Answer

Use the formula M1V1 = M2V2
M1 = 8.25 M
V1 = 25 mL
M2 = 2.40 M
V2 = ?
(8.25 M)(25 mL) = (2.40 M)(V2)
V2 = (8.25 M)(25 mL)/(2.40 M) = 85.94 mL
Rounding off to two significant figures, the final volume is 86 mL. Thus, the best choice is C, which represents the final volume in milliliters.

What Will Be the Final Volume of a Solution Prepared