Question

Which option correctly shows the concentration of H3O+ ions in pure water (pH 7) ?(1 point)
Responses

7 mol/L
7 mol/L

1.0 × 10–7 mol/L
1.0 × 10 superscript minus 7 mol/L

14 mol/L
14 mol/L

1.0 x 10–14 mol/L

Answer 1

The correct option that shows the concentration of H3O+ ions in pure water at pH 7 is:

**1.0 × 10–7 mol/L**

In pure water, the concentration of H3O+ ions is 1.0 × 10^-7 mol/L, which corresponds to a pH of 7.