Baking Soda Lab Report

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PREPARATION AND USES OF SODIUM HYDROXIDE, BLEACHING POWDER, BAKING POWDER, WASHING SODA Objective: To understand the use of common salt (NaCl) for preparation of chemicals such as Sodium hydroxide, Bleaching powder, Baking powder, Washing soda. The common salt (Chemical formula-NaCl, Chemical name- Sodium chloride) that we eat in our daily diet is the raw material for preparation of chemical compounds such as Sodium hydroxide, Bleaching powder, Baking powder, Washing soda. NaCl is a neutral salt. Sodium hydroxide (NaOH) also known as caustic soda is formed when electricity is passed through Brine [aqueous solution of sodium chloride (NaCl)] .This process is known as chlor-alkali process (Chlor for chlorine and alkali for NaOH). Hydrogen gas…show more content…
Baking soda is used to prepare antacid that neutralise the acid in stomach. It is also used in soda-acid fire extinguisher. Washing soda is chemically known as Sodium carbonate decahydrate (Na2CO3.10H2O). When sodium hydrogen carbonate is heated, anhydrous sodium chloride is obtained, which when dissolved in water and recrystallised, forms washing soda. 2NaHCO3 Heat Na2CO3 + CO2 + H2O Na2CO3 + 10H2O Recrystallisation Na2CO3.10H2O Washing soda is used in the manufacture of glass, soaps and paper. It is used to soften the hard water. It is also used to prepare sodium compounds such as borax, used as a cleansing agent. Summary: Sodium chloride can be treated differently to obtain different substances which inturn can be used to manufacture many different materials of daily uses such as bleaching powder, baking soda and baking powder, borax, glass, soaps and detergents, artificial fibres, CF’s , pesticides and many more. 1. The common name of CaOCl2 is ____. a) Baking powder b) Washing soda c) Bleaching powder d) Caustic soda e) Common salt Hint: Recall the uses of Chlorine gas. Explanation: Chlorine is used to prepare bleaching powder from Calcium…show more content…
This sodium carbonate is dissolved in water and recrystallised to form washing soda. Correct answer is - c 7) Which among the following is a neutral salt? a) Ammonium chloride b) Sodium Acetate c) Sodium chloride d) Sodium bicarbonate e) Magnesium nitrate Hint: It is used in seasoning vegetable salads. Explanation: Sodium chloride is a neutral salt and is used in preparation of food. Correct answer is - c 8) Which among the following is an ingredient in antacid? a) Sodium chloride b) Sodium hydrogen carbonate c) Calcium chloride d) Sodium carbonate e) Calcium hydroxide Hint: It is also used in baking industry. Explanation: Baking soda is chemically known as Sodium hydrogen carbonate and is used in antacid preparation at, it is basic and can neutralise the acid in stomach. Correct answer is - b 9) Match the common name of chemicals with their chemical formula. A) Washing soda 1) NaHCO3 B) Slaked lime 2)CaOCl2 C) Caustic soda 3) Ca (OH)2 D) Baking soda 4) NaOH E) Bleaching powder 5) Na2CO3.10H2O a. A-4, B-3, C-5, D-1, E-2 b. A-5, B-3, C-4, D-2, E-1 c. A-5, B-3, C-4, D-1, E-2 d. A-4, B-2, C-5, D-3,

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