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 whose hydrogen ion concentration is 2x10^-9

Answer 1

Just put the formula into the calculator with H+ = 2×10^-9.

pH = - Log(2×10^-9)
pH = 8.70

Answer 2

The approximate pH of a solution 8.69.

Explanation:

The pH of the solution is defined as negative logarithm of
`H^+` ion concentration in the solution.

`pH=-\log[H^+]`

`pH=-\log[2* 10^(-9)]=8.69`

The approximate pH of a solution 8.69.