The pH Scale
The acidic, basic, or neutral character of a solution can be measured and reported using the pH scale.
PH is short-hand for the CONCENTRATION of the hydrogen ion.
PH values commonly range from 1 to 14 although some very basic or acidic solutions may be outside this range.
A pH of 7 is a neutral solution.
PH values LOWER than 7 indicate acids; the lower the pH the more acidic the solution.
PH values GREATER than 7 indicate bases; the higher the pH the more basic the solution.
Most acid and base solutions occur in water, therefore we must consider the EQUILIBRIUM.
HOH --> H+ + OH-
As a solution becomes more acidic ( INCREASE in [H +]) the [ OH -] must decrease.
As a solution becomes more basic ( DECREASE in [H +]) the [ OH -] must increase.
Fill the following table in your lab book.