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# Compare pH-Values

Calculator for the comparison of two pH-values of acids and bases. The pH-value tells, how acidic or alkaline an aqueous solution is. With a value of 7, it is neutral, that is e.g. the value for pure water. Here, the amount of H3O+ ions is equal to the amount of HO ions. For smaller values, the solution is acidic (more H3O+), for higher values (more HO) it is alkaline. A change of 1 relates to ten times the strength, an acid with the pH-value of 6 is 10 times more acidic as water, a base with the pH-value of 8 is 10 times more alkaline.
Please enter two values, but not two ratios.

 First value (a): Second value (b): Ratio strength of acid a to b: Ratio strength of base a to b:

Round to    decimal places.

Example: a hydrochloric acid with 32 percent has a pH-value of -1, orange juice of about 3.5. So the hydrochloric acid is more than thirty thousand times as acidic.

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