Wednesday
April 16, 2014

Homework Help: College Algebra

Posted by Jenny on Monday, December 8, 2008 at 1:54am.

The hydrogen ion concentration of a substance is related to its acidity and basicity. Because hydrogen ion concentrations vary over a very wide range, logarithms are used to create a compressed pH scale, which is defined by pH=-log(H+)where (H+)is the hydrogen ion concentration, in moles per liter. Pure water has a pH of 7, which means it is neutral. Substances with a pH less than 7 are acidic, and those with a pH greater than 7 are basic. Compute the pH of each substance listed given the indicated hydrogen ion concentration. Assume that log(H+) is written with base 10.
a. Seawater, 4.63x10^-9
b. Vinegar, 9.32x10^-4

Thank you!!

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