Answer to Question #146703 in General Chemistry for gelo31

Question

Solve the following. Show your solution and box your final answer.
The OH- ion concentration of a blood sample is 2.5x10-7 M. What is the pH of the blood?

Answer 1

You are given the OH concentration, so you can solve for the pOH.

$pOH + pH= 14\newline pOH= -log(OH)=-log(2.5×10^-7)=6.60\newline pH=14-pOH\newline =14-6.60\newline 7.40$