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Video: PH of Salts(in Detail) Video Lecture - Class 10
FAQs on Video: PH of Salts(in Detail) Video Lecture - Class 10
| 1. What is the pH of salts? |  |
Ans. The pH of salts depends on the nature of the salt. Salts can be categorized as acidic, basic, or neutral based on their pH value. Acidic salts have a pH value less than 7, basic salts have a pH value greater than 7, and neutral salts have a pH value equal to 7.
| 2. How is the pH of salts determined? | |
Ans. The pH of salts can be determined by using a pH indicator or a pH meter. A pH indicator is a substance that changes color depending on the acidity or alkalinity of a solution. By adding a few drops of a pH indicator to a salt solution and observing the color change, we can determine the pH of the salt.
| 3. Give an example of an acidic salt and explain its pH value. | |
Ans. An example of an acidic salt is ammonium chloride (NH4Cl). When ammonium chloride dissolves in water, it undergoes hydrolysis and releases hydrogen ions (H+). These hydrogen ions make the solution acidic, resulting in a pH value less than 7.
| 4. Provide an example of a basic salt and explain its pH value. | |
Ans. An example of a basic salt is sodium carbonate (Na2CO3). When sodium carbonate dissolves in water, it dissociates into sodium ions (Na+) and carbonate ions (CO3^2-). The carbonate ions react with water molecules, producing hydroxide ions (OH-). These hydroxide ions make the solution basic, resulting in a pH value greater than 7.
| 5. Can salts be neutral? Provide an example. | |
Ans. Yes, salts can be neutral. An example of a neutral salt is sodium chloride (NaCl). When sodium chloride dissolves in water, it dissociates into sodium ions (Na+) and chloride ions (Cl-). Neither of these ions reacts with water to produce hydrogen ions (H+) or hydroxide ions (OH-), resulting in a pH value equal to 7, which is neutral.
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