Question #42173

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Answer 1 · 2017-05-29T15:44:31

#10^(-"pH")# is the formula for converting #"pH"# into #["H"^+]#, the hydrogen/hydronium ion concentration of a solution.

Answer 2 · 2017-05-29T16:01:30

You use this to calculate the #["H"_3"O"^+]# of a solution (the molar concentration of hydronium/hydrogen ions in solution).

Remember that to find the #"pH"# from a known #["H"_3"O"^+]#, we can use the formula

#"pH" = -log["H"_3"O"^+]#

If we use the properties of logarithms, we can derive that equation from this one:

#"pH" = -log["H"_3"O"^+]#

#-"pH" = log["H"_3"O"^+]#

#10^-"pH" = ["H"_3"O"^+]#