1. The problem statement, all variables and given/known data A strong base cane be assumed to be fully ionised in dilute solution. Use the Kw value to calculate the hydrogen ion concentration and hence the pH of a 0.15 M solution of potassium hydroxide, KOH. 2. Relevant equations 3. The attempt at a solution Problem is, I don't know where to begin, so any advice on how to proceed or pointers would be appreciated.