Question

The pH of a chemical solution is given by the formula
pH = -log10[H+]
where [H+] is the concentration of hydrogen ions in moles per liter.
Find the pH if the [H+] = 7.7 × 10-2.

Answer 1

= log ( 7.7.10^(-2) )

Answer 2

think there is a minus sign out front

Answer 3

Oh negative !

Answer 4

yes for some reason

Answer 5

thank you guys so much :)

Answer 6

\[-\log(7.7\times 10^{-2})=-\log(7.7)+2\]

Answer 7

as \(-\log(7.7\times 10^{-2})=-(\log(7.7)-\log(10^{-2}))=-\log(7.7)+2\log(10)\)
\(=\log(7.7)+2\)