1. a solution at 25 degrees celsius is 1.0 × 10–5 m h3o+. what is the concentration of oh– in this solution?
1.0 × 10–5 m oh–
1.0 × 10–14 m oh–
1.0 × 105 m oh–
1.0 × 10–9 m oh–

2.what is the ph of a solution with a concentration of 5.2 × 10–8 m h3o+?
1.01
3.24
7.28
8.72

Answer :

(1) The concentration is,

(2) The pH of the solution is, 7.28

Explanation:

Solution for part (1) :

We are given :

Concentration of =

First we have to calculate the pH of the solution.

Now we have to calculate the pOH.

Now we have to calculate the concentration.

Therefore, the concentration is,

Solution for part (2) :

We are given :

Concentration of =

Now we have to calculate the pH of the solution.

Therefore, the pH of the solution is, 7.28

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