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Calculate the OH-ion concentration of a 6.2x10-3 M HCIO3 solution.

User Davs
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1 Answer

11 votes
11 votes

Answer:

1.62x10⁻¹² M

Step-by-step explanation:

HClO₃ is a strong acid, meaning that a 6.2x10⁻³ M solution has a molar concentration of H⁺ of 6.2x10⁻³.

With the above information in mind, we can calculate the pH of the solution:

  • pH = -log(6.2x10⁻³) = 2.21

Now we can calculate the pOH of the solution, using the pH:

  • pOH = 14 - pH
  • pOH = 11.79

Finally we calculate [OH⁻], using the definition of pOH:

  • pOH = -log[OH⁻]
  • [OH⁻] =
    image = 1.62x10⁻¹² M
User Minions
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