SOLUTION: The pH of a substance is 5.342. The [H30+] is? a. 4.55E-06 moles/liter b. 5.342E05 moles/liter c. 2.1979E05 moles/liter d. 2.1979E-05 moles/liter

Algebra ->  Customizable Word Problem Solvers  -> Numbers -> SOLUTION: The pH of a substance is 5.342. The [H30+] is? a. 4.55E-06 moles/liter b. 5.342E05 moles/liter c. 2.1979E05 moles/liter d. 2.1979E-05 moles/liter      Log On

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Question 202847: The pH of a substance is 5.342. The [H30+] is?
a. 4.55E-06 moles/liter
b. 5.342E05 moles/liter
c. 2.1979E05 moles/liter
d. 2.1979E-05 moles/liter

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
pH is the log of the hydronium ion concentration, multiplied by minus one

so, log[H3O+] = -5.342

using the inverse log function on a calculator gives [H3O+] = 4.55E-6 (approx)