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What is the pH of a solution that has a hydronium ion concentration of 1 x 10^-5

Practice Questions

Q1
What is the pH of a solution that has a hydronium ion concentration of 1 x 10^-5 M?
  1. 5
  2. 7
  3. 9
  4. 10

Questions & Step-by-Step Solutions

What is the pH of a solution that has a hydronium ion concentration of 1 x 10^-5 M?
  • Step 1: Understand that pH is a measure of how acidic or basic a solution is.
  • Step 2: Know that pH is calculated using the formula pH = -log[H3O+].
  • Step 3: Identify the hydronium ion concentration given in the question, which is [H3O+] = 1 x 10^-5 M.
  • Step 4: Substitute the value of [H3O+] into the pH formula: pH = -log(1 x 10^-5).
  • Step 5: Calculate the logarithm: log(1 x 10^-5) = -5.
  • Step 6: Apply the negative sign: pH = -(-5) = 5.
  • Step 7: Conclude that the pH of the solution is 5.
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