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    ph. 片語

    • 1. 蘇打水;汽水

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  2. Soda water Carbonated water, is also known as soda water, sparkling water, or seltzer water. Soda water is made by adding carbon dioxide under pressure. Chemical formula for soda water The chemical formula of a compound is a symbolic representation of its

  3. Q. Classify the following materials as homogeneous and heterogeneous mixtures.(soda-water, wood, air, soil, petrol and water mixture, alcohol and water mixture, chalk and water mixture, sand and water mixture, sugar and water mixture, pumice stone, smoke, salt and water mixture, cough syrup, gun powder).

  4. A solution is a homogeneous mixture of two or more components in which the particle size is smaller than 1 nm. Common examples of solutions are sugar in water and salt in water solutions, soda water, etc. In a solution, all the components appear as a single phase. There is particle homogeneity i.e. particles are evenly distributed.

  5. What colour will universal indicator show if you add it to the following substances ? (a) potassium hydroxide, pH = 12. (b) soda water, pH = 5. (c) sulphuric acid, pH = 2. Q. What is the pH of soda water. Q. The pH of a sample of pure water is 7 at room temperature. What will be its pH when a pinch of solid baking soda is dissolved in it?

  6. Sodium bicarbonate, also known as baking soda or bicarbonate of soda, is a chemical compound with the formula NaHCO3 and the IUPAC designation sodium hydrogencarbonate. A sodium cation (Na+) and a bicarbonate anion (HCO3) combine to form this salt. Sodium bicarbonate is a white, crystalline substance that is commonly found as a fine powder.

  7. As water can be oxidized and reduced, it is very useful in redox reactions. 3. Hydrolysis reaction. Water has a very strong hydrating tendency due to its dielectric constant. It dissolves many ionic compounds. Some covalent and ionic compounds can be hydrolyzed in water. Properties. Chemical formula. H2O.

  8. Ion Exchange Resin Method: In this method, the permanent hardness of water is removed by using resins. Ca ++ /Mg ++ ions are exchanged with Cl –, and SO 4-2 ions are exchanged with anion exchange resin (RNH 2 OH). Demineralised water is formed in this process. ⇒ 2RCOOH + Ca ++ → (RCOO) 2 Ca + 2H +.

  9. By combining two or more substances, a mixture is produced. A homogeneous solution tends to be identical, no matter how you sample it. Homogeneous mixtures are sources of water, saline solution, some alloys, and bitumen. Sand, oil and water, and chicken noodle soup are examples of heterogeneous mixtures. Q4.

  10. Sodium Carbonate Formula. Sodium carbonate is a diazonium salt of carbonic acid with the chemical formula Na2CO3. It is also known as Soda crystals, soda ash, washing soda. This inorganic compound is water-soluble and when dissolved in water, it forms carbonic acid and sodium hydroxide. In its pure form, it is a white powder and odourless.

  11. Properties of Caustic Soda. It is a white solid which has a melting point of 591K. It is a stable compound. NaOH is bitter and has a soapy feel to it. It is highly soluble in water and moderately soluble in alcohol. Sodium hydroxide is strongly alkaline in nature.

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