Question

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

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

1.0 x 10–14 mol/L
1.0 x 10 superscript minus 14 mol/L

7 mol/L
7 mol/L

14 mol/L

Answer 1

The correct concentration of H3O⁺ ions in pure water at pH 7 is:

**1.0 × 10^–7 mol/L**

or

**1.0 x 10^–7 mol/L**

Both are valid representations.