pH = −log of the concentration of protons (H+ in moles per liter or molar.) A solution has a H+ concentration of 3.16 × 10−9 M. What is the pH of the solution?
I feel like I must be typing this in my calculator wrong.

Question

pH = −log of the concentration of protons (H+ in moles per liter or molar.) A solution has a H+ concentration of 3.16 × 10−9 M. What is the pH of the solution?
I feel like I must be typing this in my calculator wrong.

lfreeman1285 · Answer

Try putting it in as the log(3.16 x 10^-9), and then making that number negative.

irishboy123 · Answer

it's $log_{10}$, if that helps

butterflydreamer · Answer

your equation to find pH is given by:
$$pH = -\log _{10} \left[ H^+ \right]$$
So we're given $$\left[ H^+ \right] = 3.16 \times 10^{-9}$$
Just plug into the equation and you'll get your answer :)