A question in ExamKrackers asks us why triphenylmethanol is so acidic. Link to the structure below: http://en.wikipedia.org/wiki/Triphenylmethanol Explanation: I'm not seeing how the lone pairs on the Oxygen could donate into any of the rings though. It can't donate those electrons onto the carbon it's next to or else that carbon would have 5 bonds. Can someone explain? Thanks!