Question

A solution of KOH has a [OH-] concentration of 0.045 M. What is the pOH of the solution? *

1 point
-1.3
1.3
1.1
0.90​
what is the answer?

Answer 1

The pOH of the 0.045 M solution is 1.3

The second option (1.3) is correct

Step-by-step explanation:

Step 1: Data given

Concentration [OH-] of KOH is 0.045 M

Step 2: Calculate pOH

pOH = -log[OH-]

pOH = -log (0.045)

pOH = 1.3

The answer:

The pOH of the 0.045 M solution is 1.3

The second option (1.3) is correct

Answer 2

`pOH=1.3`

Step-by-step explanation:

Hello,

In this case, since pH is computed by knowing the concentration of hydrogen ions, one could compute the pOH by knowing the concentration of the hydroxyl ions as in this case which is 0.045M as shown below:

`pOH=-log([OH^-])=-log([0.045])\\\\pOH=1.3`

Best regards.