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  Properties of Baking Soda-
                 1.  It is a white crystalline solid














               Baking Soda

                 2.  It is sparingly soluble in water.
                 3.  It is a mild,non-corrosive base.
                 4.  When sodium hydrogen carbonate is heated, it decomposes to give
                    sodium carbonate with evolution of carbon dioxide gas.

                    NaHCO    --heat  Na CO   +  H O  +  CO        2
                                                        2
                                                 3
                                             2
                             3



























                 5.  When sodium hydrogen carbonate reacts with an acid it produces
                    the corresponding salt and water with evolution of carbon dioxide gas.

                    NaHCO3   +  HCl     NaCl +  H2O  +  CO2
















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