What is the pH of a 0.01 M solution of NaOH?

Practice Questions

Q1
What is the pH of a 0.01 M solution of NaOH?
  1. 12
  2. 13
  3. 14
  4. 11

Questions & Step-by-Step Solutions

What is the pH of a 0.01 M solution of NaOH?
  • Step 1: Understand that NaOH is a strong base and will completely dissociate in water.
  • Step 2: Recognize that a 0.01 M solution of NaOH means there are 0.01 moles of NaOH in 1 liter of water.
  • Step 3: Since NaOH dissociates completely, the concentration of OH- ions in the solution is also 0.01 M.
  • Step 4: Calculate the pOH using the formula pOH = -log[OH-]. Here, [OH-] = 0.01 M.
  • Step 5: Substitute the value into the formula: pOH = -log(0.01).
  • Step 6: Calculate -log(0.01), which equals 2.
  • Step 7: Use the relationship between pH and pOH: pH + pOH = 14.
  • Step 8: Rearrange the equation to find pH: pH = 14 - pOH.
  • Step 9: Substitute the value of pOH: pH = 14 - 2.
  • Step 10: Calculate the final pH: pH = 12.
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