# PH problem

1. Nov 26, 2007

### temaire

1. The problem statement, all variables and given/known data
Calculate the pH of a solution of a concentration of 0.23 mol/L of H2SO4, if it completely ionizes in the solution.

2. Relevant equations
[H3O] = 10$$^{-pH}$$
pH = -log[H3O]

3. The attempt at a solution
The answer I got for this question is 0.34. I got this answer by first writing out the ionization equation for H2SO4, and determining how many hydronium ions are made, which I got as two. Then, I found out the concentration of the hydronium ions by multiplying 0.23 mol/L by 2. Then, I used pH = -log[H3O], and got the answer of 0.34. Am I right?

2. Nov 26, 2007

### symbolipoint

Your described method is good. You are looking for the negative logarithm of 0.46 Molar.