Question

Which option correctly shows the concentration of H O ions in pure water?(1 point) 3
+
7 mol/L
1.0 × 10 mol/L -7
1.0 x 10 mol/L -14
14 mol/L

Answer 1

In pure water, the concentration of hydrogen ions (H⁺) is 1.0 × 10⁻⁷ mol/L. This is because pure water undergoes self-ionization to produce an equal concentration of H⁺ and hydroxide ions (OH⁻), resulting in a neutral pH of 7.

Therefore, the correct option is:

**1.0 × 10⁻⁷ mol/L**.