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A solution has a [OH−] of 1 x 10−9. What is the pOH of this solution?

a) 5

b) 7

c) 9

d) 12

Respuesta :

Space

Answer:

C) 9

General Formulas and Concepts:

Math

Algebra I

  • Logarithms

Chemistry

Acid-Base Equilibrium

  • Acid/Bases
  • Titrations
  • pH and pOH: take -log of concentration

Explanation:

Step 1: Define

[OH⁻] = 1 × 10⁻⁹ M

Step 2: Find pOH

Simply take negative log₁₀ of the concentration.

  1. Set up:                                                                                                             pOH = -log(1 × 10⁻⁹ M)
  2. Evaluate:                                                                                                         pOH = 9

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