Page 2 - 3.LESSON NOTES-(CH-2 PH OF ACIDS & BASES)
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The concentration of H+ ions {represented as [H+]} is less than the
               concentration of (OH)- ions  {represented as [OH- ]}

                           Hence in an acidic solution,      [H+]  <  [OH- ]

               So we can determine the acidity or basicity of a solution by taking in to
                                                        +
               consideration, the concentration of H  ions ie. [H+] present in it.

                   •  Universal indicator/pH solution

                       The [H+] of a solution can be determined using:
                       Universal indicator/pH solution.

               Universal indicator/pH solution-

                   •  It is a mixture of dyes that changes colour gradually over a range of pH.
                   •  It is used as an indicator paper in testing for acid/base/neutral solutions.


                   •  pH Scale-

                       The pH scale is a scale that is used to determine
                       the
                       relative basicity or acidity of substances to other substances,
                       based on
                       the amount of Hydrogen ion concentration present in a substance

                       It ranges from 0 to 14 where-
                          •  Acid- 0 to 6
                          •  Neutral – 7
                          •  Base – 8 to 14

                       https://youtu.be/PdprNTwb4Ks
                       Video on change of colours in Universal indicator solution.






















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