Question

What is the H+ if the pH of a solution is 1.65?

Answer 1

`["H"^+] = "0.022 mol/L"`

Explanation:

The formula for `"pH"` is

`color(blue)(|bar(ul(color(white)(a/a) "pH" = -log["H"^+]color(white)(a/a)|)))" "`

We can rearrange this equation to get

`color(blue)(|bar(ul(color(white)(a/a)["H"^+] = 10^"-pH"color(white)(a/a)|)))" "`

If `"pH" = 1.65`,

`["H"^+] = 10^"-1.65"color(white)(l)"mol/L" = "0.022 mol/L"`