Respuesta :

Answer:

12.1

Explanation:

Since the pH has been given, the pOH can be found by using the formula

pH + pOH = 14

pOH = 14 - pH

From the question we have

pOH = 14 - 1.9

We have the final answer as

12.1

Hope this helps you

Answer:

12.10

Explanation: