Answer: 51.3 mL.
Step-by-step explanation:
To calculate the minimum volume of a 2.34 M NaOH solution needed to make 150.0 mL of a 0.800 M NaOH solution, we can use the formula:
M1V1 = M2V2
Where M1 is the initial molarity, V1 is the initial volume, M2 is the final molarity, and V2 is the final volume.
We want to find the initial volume, so we can rearrange the formula to solve for V1:
V1 = (M2V2) / M1
Substituting the given values, we get:
V1 = (0.800 mol/L x 0.150 L) / 2.34 mol/L
V1 = 0.0513 L or 51.3 mL (rounded to 3 significant figures)
Therefore, the minimum volume of a 2.34 M NaOH solution needed to make 150.0 mL of a 0.800 M NaOH solution is 51.3 mL. Answer: 51.3 mL.