Question

Calculating [H+] from pOH

A solution at 25 ?C has pOH = 10.53. Which of the following statements is or are true?

The solution is acidic.

The pH of the solution is 14.00 - 10.53.

For this solution, [OH?] = $10^{-10.53}$ M

Only one of the statements is true.
	Statements I and II are true.
	Statements I and III are true.
	Statements II and III are true.
	All three statements are true.

Answer 1

We konw pH + pOH = 14

and pH = 14-pOH

so statement II is correct

when pH is less than 7 then solution is acidic and hence statement I is correct

we find OH- concentraiton by using pOH

pOH = - log [OH-]

lets take antilog of both side

[OH-] = Antilog (-pOH)

And in third statement it is proved

so I , II and III All three are correct.

and

answer is All three statements are true.