Question

what is the pH of a solution with a [H+]=3.74 x 10 ^-12 M?

Answer 1

it would help to know what the formula for pH is.
i believe it involves the common log

Answer 2

yeah, pH= -log[H+]

but i have trouble plugging it into my calculator.... which seems to be my biggest issue...

Answer 3

Is that \(\log_{10}[H+]\)?

Answer 4

Is it base 10?

Answer 5

yes

Answer 6

Because \[
\log_{10}(10^{-12}) = -12
\]

Answer 7

\[-\log(3.74\times 10^{-12})=-\log(3.74)+12\]

Answer 8

If you suppose something like \(\sqrt{10}\approx 3.74\) then \(\log_{10}(3.74)\approx 1/2\)

Answer 9

thx guys :)