Question

What is the pH of a 0.025 M [OH−] solution?
a. 0.94
b. 1.60
c. 9.60
d. 12.40

Answer 1

D) 12.40

Step-by-step explanation:

plato

Answer 2

Answer : The correct option is, 12.40

Explanation : Given,

Concentration of
`OH^-` ion = 0.025 M

First we have to calculate the pOH.

`pOH=-\log [OH^-]`

`pOH=-\log (0.025)`

`pOH=1.6`

Now we have to calculate the pH.

`pH+pOH=14\\\\pH=14-pOH\\\\pH=14-1.6=12.40`

Therefore, the pH of a solution is, 12.40