Where did you learn your chemistry? The pH scale is about...

  1. 705 Posts.
    Where did you learn your chemistry?

    The pH scale is about relative Arrhenius acidity with lower pH being more acidic and higher pH being more alkaline/basic. Thus a pH8 is more acidic than pH9 even though both would be basic. Similarly, pH4 is more basic than pH3 even though both would be acid.
 
arrow-down-2 Created with Sketch. arrow-down-2 Created with Sketch.