Write chemical formula and one use of the following- Washing Soda

Washing soda is a transparent crystalline solid with the molecular formula sodium carbonate decahydrate which contains ten molecules of water of crystallisation. The chemical formula of washing soda is Na 2 CO 3 . 10 H 2 O . It is prepared from soda ash. It has the cleansing properties for removing dirt and grease from dirty clothes. It is used in the manufacture of glass, soap, and paper.

Write chemical formula and one use of the following- Baking Soda

Baking soda is a mild, non-corrosive base, consisting of white crystals which is sparingly soluble in water. The chemical name of baking soda is sodium hydrogencarbonate or sodium bicarbonate. Therefore, its chemical formula is NaHCO 3 . It is prepared on large scale by reacting a cold and concentrated solution of common salt with ammonia and carbon dioxide. NaCl + NH 3 + H 2 O + CO 2 → NaHCO 3 + NH 4 Cl The uses of baking soda are- It is used as an antacid to remove acidity of the stomach and fire extinguishers. It is widely used in making baking powder and soda water.

Write chemical formula and one use of the following- Baking Soda

Baking soda is a mild, non-corrosive base, consisting of white crystals which is sparingly soluble in water. The chemical name of baking soda is sodium hydrogencarbonate or sodium bicarbonate. Therefore, its chemical formula is NaHCO 3 . It is prepared on large scale by reacting a cold and concentrated solution of common salt with ammonia and carbon dioxide. NaCl + NH 3 + H 2 O + CO 2 → NaHCO 3 + NH 4 Cl The uses of baking soda are- It is used as an antacid to remove acidity of the stomach and fire extinguishers. It is widely used in making baking powder and soda water.

Write chemical formula and one use of the following- Washing Soda

Washing soda is a transparent crystalline solid with the molecular formula sodium carbonate decahydrate which contains ten molecules of water of crystallisation. The chemical formula of washing soda is Na 2 CO 3 . 10 H 2 O . It is prepared from soda ash. It has the cleansing properties for removing dirt and grease from dirty clothes. It is used in the manufacture of glass, soap, and paper.

What happens when Gypsum is heated upto 373 ∘ K (Write only chemical equation).

Gypsum(calcium sulphate dihydrate) is heated to a temperature of 373 ° K 100 ° C to prepare Plaster of Paris in a kiln. During this chemical reaction, gypsum loses three-fourths of its water of crystallisation to form calcium sulphate hemi hydrate. Therefore, the following reaction is observed- CaSO 4 . 2 H 2 O Gypsum → ∆ , 100 ° C CaSO 4 . 1 2 H 2 O Plaster of Paris + 3 2 H 2 O Water

Write only chemical equation for the reaction of preparation of bleaching powder. Give its one use also.

Bleaching powder is a white powder which has a strong smell of chlorine and that is why it is known as chloride of lime. It is soluble in cold water. The molecular name of bleaching powder is calcium oxychloride and the chemical formula is CaOCl 2 . It is mainly used as disinfecting agents, bleaching cotton, preparing chloroform, etc. This can be prepared by passing chlorine gas over dry slaked lime. Therefore, the following chemical reaction will take place- Ca OH 2 Calcium Hydroxide Slaked lime + Cl 2 Chlorine → CaOCl 2 Calcium oxychloride Bleaching Powder + H 2 O Water