Notes of acid, bases and salts class 10
Noteswala 2020 Acid, Bases and Salts The taste of the food is due to presence of acids and bases in them. Acids Acids is defined as the one which produces hydrogen ions in water. For Example , Sulphuric Acid, Hydrochloric Acid etc. They give sour taste. Acids turn blue litmus to red. This is used as confirmation test for the presence of acid. When acids react with metals, gases are evolved. Reactions with Acids 1. Reaction of Acid with Metal Acid + Metal → Salt + Hydrogen gas Mg + H 2 SO 4 → H 2 + Mg SO 4 2. Reaction of Acid with Carbonates Na 2 CO 3 (s) + 2 HCl (aq) → 2NaCl (aq) + H 2 O(l) + CO 2 (g) 3. Reaction of Acid with Bicarbonates NaHCO 3 (s) + HCl (aq) → NaCl(aq) + H 2 O (l) + CO 2 (g) Similarity between Acids and Bases Both acids and base react with water. They produce ions in water Both acids and bases acts as electrolytes, so are good conductors of electricity. Both of them changes the colour of the litmus paper. Classification of Acids Acids are classified as