When drawn as a lewis dot structure, which of the following possesses a lone pair of electrons attached to the central atom?
nh3
pcl5
ch4
sf6

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

what is the question here. i think you messed up.

0.88m hope i am correct : )