What is pH?
This post will be an introduction to the pH scale for QCE Chemistry.
3.1.3 – pH Scale
• Understand that water is a weak electrolyte and the self-ionisation of water is
represented by Kw = [H+][OH–]; Kw can be used to calculate the concentration
of hydrogen ions from the concentration of hydroxide ions in a solution
• Understand that the pH scale is a logarithmic scale and the pH of a solution
can be calculated from the concentration of hydrogen ions using the
relationship pH = –log10 [H+]
• Use appropriate mathematical representation to solve problems for hydrogen
ion concentration [H+(aq)], pH, hydroxide ion concentrations [OH–(aq)] and pOH.
Describing Acids and Bases with pH
This video will go through pH in regards to acids and bases.
Practice Problems
This video will go through practice problems regarding pH and pOH.
