Question

For a solution of pH of 4.61  

What is the [H_3O^+]?  

What is the [OH^-]?  

What is the pOH?

Answer 1

pH of solution = 4.61

a. We know that, pH = - log [ H₃O⁺]

[ H₃O⁺] = 10^-pH

  =10^-4.61

   = 2.455 x 10^-5 M

b. We know that, pH + pOH = 14 pOH = 14 - pH = 14 - 4.61 = 9.39

pOH = - log [OH^-]

[OH^-] = 10^-pOH ​

  = 10^-9.39

  = 4.074 X 10^-10 M

c. As calculated above,

pH + pOH = 14

pOH = 14 - pH = 14 - 4.61

pOH = 9.39