Answer:
The answer to your question is 21.75 mL of stock solution of [HClO₄]
Explanation:
Data
[HClO₄] = 0.435 M
Stock solution [HClO₄] = 3 M
Total volume = 150 mL
Formula
Concentration 1 x Volume 1 = Concentration 2 x Volume 2
- Solve for Volume 1
Volume 1 = Concentration 2 x Volume 2 / Concentration 1
- Substitution
Volume 1 = 0.435 x 150 / 3
- Simplification
Volume 1 = 65.25 / 3
- Result
Volume 1 = 21.75 mL
