Page 1 - 3. LESSON NOTES-(INDICATIRS OF ACIDS & BASES)
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SAI International School
                                                       Class-X
                                               Subject_ Chemistry

                                          Topic- Acids, Bases & Salts
                                  Sub Topic- Indicators of Acids & Bases
                                                  LESSON NOTES


                          A.  Compounds in general are categorized into three categories-




               ACIDS                                             BASES                                              SALTS

               =SOUR TO TASTE                     =BITTER TO TASTE                     =MADE FROM
               =CORROSIVE                         =SLIPPERY TO TOUCH                ACID & BASE
                                                                                         ON RECTIO

                                                        ACIDS-


                   Natural Acids                                                                               Mineral Acids
                       OR                                                                   OR
                   Organic Acids                                                                              Inorganic Acids
               =Acids obtained from fruits, vegetables                               =Acids made by man from
               & plants are Organic acids.                                                 Minerals are Mineral acids.
               Examples of Organic & Inorganic Acids-
                 Sl.No.     ORGANIC ACID            SOURCE                     INORGANIC ACID
                 1’         Citric acid             Lemon, Orange              Hydrochloric acid-HCl
                 2.         Acetic acid             Vinegar                    Sulphuric acid- H2SO4
                 3.         Tartaric acid           Tamarind, Grapes           Nitric acid – HNO3
                 4.         Oxalic acid             Tomato                     Phosphoric acid H3PO4
                 5.         Formic acid             Ant/Bee/Nettle sting       Carbonic acid -H2CO3
                 6.         Malic acid              Apples                     Hypochlorous acid-
                                                                               HClO (Week acid)
                 7.         Lactic acid             Milk/Curd                  Perchloric acid -HClO4
                                                                               (strong acid)






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