Question

A student pours 800.0 mL of a 3.000 molar solution of sodium hydroxide into a 2.00 liter volumetric flask and fills the flask up with water. What is the new molarity of the solution?

5 points
12.00 M
1.20 M
14.00 M
0.0750 M

Answer 1

M1V1 = M2V2
M1 = 3.000 M
V1 = 0.8000 L
M2 = ?
V2 = 2.00 L

3.000 M • 0.8000 L = M2 • 2.00 L

Solve for M2 —> 1.20 M NaOH