The pH of a fruit juice is 3.2. What is the hydrogen ion concentration of the juice?

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Answer 1 · 2017-07-18T02:36:35

#["H"^+] = 6xx10^-4M#

We're asked to find the #["H"^+]# of a solution, given its #"pH"#.

We can use the equation

#["H"^+] = 10^(-"pH")#

to find the hydrogen ion concentration.

We thus have

#["H"^+] = 10^-3.2 = color(red)(6xx10^-4M#

Since the #"pH"# is rounded to one decimal place, the hydrogen ion concentration is rounded to one significant figure.