Question

The equation for the pH of a substance is pH = –log[H ], where H is the concentration of hydrogen ions. What is the approximate pH of a solution if the concentration of hydrogen ions is 5. 0 × 10–4 moles per liter? 2. 7 3. 0 3. 3 3. 6.

Answer 1

The formula is pH = -log[
`H^(+)`]. You are given the concentration of hydrogen ions so all you need to do is input that into the formula.

`pH=-log[H^(+)]\\\\pH=-log[5.0x10^(-4)]\\\\pH=3.30`