. What volume of 10M NaOH would you need to add to a vessel, if your final
solution is 200 mL of 0.1M NaOH?

2 mL

Explanation:

Step 1: Given data

Initial concentration (C₁): 10 MInitial volume (V₁): ?Final concentration (C₂): 0.1 MFinal volume (V₂): 200 mL

Step 2: Calculate the volume of the 10 M solution

We want to prepare a diluted solution from a concentrated one. we can calculate the volume of the initial solution using the dilution rule.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂/C₁

V₁ = 0.1 M × 200 mL/10 M

V₁ = 2 mL

Answerhund's rule;

I’m really not sure what’s the answer. sorry