In chemistry, pH is the logarithm scale between 0 and 14 that determines the acidity of water solutions. A neutral media has a pH of 7. PH values of less than 7 characterize acidic solutions, while a pH greater than 7 is basic. Strong acids completely dissociate in water. On the contrary, a weak acid only partially dissociates. An example of such a compound is acetic acid found in vinegar. The determination of pH allows you to estimate the concentration of the weak acid.
Instructions
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1
Take a strip of pH paper.
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2
Put the strip in the weak acid solution, and then take pH paper out after two to three seconds.
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3
Compare the color of the pH paper with the scale printed on the pH paper package to determine the pH of the acid solution. For weak acid solutions, expect to see pH values of between 3 and 5.
