Answer:
The answer to your question is pH = 3
Step-by-step explanation:
pH is a scale that measures the concentration of hydronium ion in a solution.
This scale goes from 0 to 14. A solution is acid if the pH goes from 0 to 6.9. A solution is neutral is the pH = 7 or the solution is alkaline if the pH goes from 7.1 to 14.
Formula
pH = - log [H₃O⁺]
Substitution
pH = -log [0.001]
pH = 3