Hi there. I have a question regarding the formula to calculate pH.

the question is: What’s the formula to calculate for pH? What is the pH of [H+] = 3.5 x 10-6 mol/L?

I’m just confused on how to calculate it.

pH = -log (H^+)

pH = -log (3.5E-6)
Punch -key then log key then 3.5E-6. The answer should be 5 something. Post here if you want to check your answer.