R3.1 pH scale and Kw
This sub-topic looks at the pH scale and how to calculate the pH of a solution of a strong acid or strong base with a known concentration. It covers the ionic product or water and how to recognise solutions as acidic, neutral or basic by the relative values of [H+] and [OH−]. Why is a logarithmic scale preferred to a linear scale for hydrogen ion concentration? The pH scale goes from 0 to 14 A question to consider:...