Classify the following salts into acidic, basic and neutral:
Ammonium chloride, Sodium carbonate, Sodium chloride, Potassium sulphate.
Salts can be classified in a variety of ways.
Salts that produce hydroxide ions when dissolved in water are called Basic salts. These are produced by the reaction of a strong base and weak acid. The pH is greater than 7.
Example: Sodium carbonate (Na2CO3) is a basic salt.
Salts that produce H+ ions when dissolved in water making it acidic solutions are Acidic salts. These are produced by the reaction of strong acid and weak base. The pH is less than 7.
Example: Ammonium chloride (NH4Cl) is an Acidic Salt.
Neutral salts are those salts that are neither acidic nor basic in nature. These are produced by the reaction of a strong base and strong acid. The pH is equal to 7, Hence they are neutral in nature.
Example: Sodium chloride ( NaCl ), Potassium sulphate (K2SO4) is a neutral salt.
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- Write the balanced equation for the following chemical reactions.(i) Hydrogen + Chlorine → Hydrogen chloride(ii) Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride(iii) Sodium + Water → Sodium hydroxide + Hydrogen.
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- Write the balanced chemical equations for the following reactions(a) Sodium carbonate on reaction with hydrochloric acid in equal molar concentrations gives sodium chloride and sodium hydrogencarbonate.(b) Sodium hydrogencarbonate on reaction with hydrochloric acid gives sodium chloride, water and liberates carbon dioxide.(c) Copper sulphate on treatment with potassium iodide precipitates cuprous iodide (Cu2 I2 ), liberates iodine gas and also forms potassium sulphate.
- Write the balanced chemical equations for the following reactions :(a) Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water(b) Zinc + Silver nitrate → Zinc nitrate + Silver(c) Aluminium + Copper chloride → Aluminium chloride + Copper(d) Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride
- Write a balanced chemical equation with state symbols for the following reactions :(i) Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.(ii) Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.
- How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water?
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- What is the chemical formula of sodium chloride?
- Name the process you would use to separate ammonium chloride from a mixture of sodium chloride and ammonium chloride.
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