Watch these videos. The first explains pH and the pH scale and explains how to conduct pH calculations. The pH scale ranges from 0 to 14. A solution with a pH of 7 is neutral. If the pH is less than 7, the solution is acidic. If the pH is greater than 7, the solution is basic. Since the pH scale is logarithmic, each whole pH value below 7 is ten times more acidic than the next higher value.

The second covers common strong acids and strong bases and presents examples of pH calculations. Do not forget that strong acids and strong bases nearly completely dissociate in ions in aqueous solutions.

The third explains how titration is conducted and presents an example of titrating strong acid with a strong base. It covers indicators, endpoint, equivalence point, and calculating the unknown concentration. Note that the endpoint of titration is defined as the moment when enough titrant has been added to the titrand to facilitate a color change. The equivalence point is defined as the moment when the amount of titrant added is enough to completely neutralize the analyte solution.

Source: Khan Academy

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Last modified: Thursday, November 12, 2020, 12:38 PM