I am lost...
The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by pH= -log(H^+) where H^+ represents the concentration of the hydrogen ions in the slution in moles per liter. Find the pH if the hydrogen ion concentration is 1x10^-4
So all I had to do was to input 1x10^-4 where (H+) is at?
My stump is this: How do I know, when given an equation, when to use log? We are working on so many different equations that I do not know what cue is for log, what cue is for exponential equations. etc,