Autoionization of water

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  1. What is auto-ionization?
  2. Autoionization of water.
  3. The autoionization expression.
  4. Calculations using the expression.
  5. Why is neutral water pH 7?
  1. Understand the Kw expression for the ionic product of water.
    1. Write the expression for the ionic product of water, Kw, at 25oC. Include the equation for the dissociation of water.
    2. Explain why, at 45oC, a sample of water has a pH below 7 but it is still neutral.