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Acidity & Basicity-Factors affecting Video Lecture | Crash Course for IIT JAM Chemistry
FAQs on Acidity & Basicity-Factors affecting Video Lecture - Crash Course for IIT JAM Chemistry
| 1. What is acidity and basicity in chemistry? |  |
Acidity and basicity are chemical properties that describe the ability of a substance to donate or accept protons, respectively. Acidity refers to the concentration of hydrogen ions (H+) in a solution, while basicity refers to the concentration of hydroxide ions (OH-) in a solution. Acids are substances that increase the concentration of H+ ions when dissolved in water, while bases increase the concentration of OH- ions.
| 2. How do acidity and basicity affect chemical reactions? | |
Acidity and basicity play a crucial role in chemical reactions. Acids and bases can react with each other to form water and a salt through a process called neutralization. Acids can also react with metals to produce hydrogen gas, while bases can react with fats to form soaps. Additionally, the acidity or basicity of a substance affects the rate and direction of many reactions, as it influences the behavior of other reactants and catalysts.
| 3. What factors affect the acidity or basicity of a substance? | |
Several factors can affect the acidity or basicity of a substance. One of the most important factors is the nature of the chemical bonds within the substance. For example, compounds containing hydrogen atoms bonded to highly electronegative elements, such as oxygen or fluorine, tend to be acidic. On the other hand, compounds with hydroxide ions (OH-) or amine groups (NH2) are generally basic. The concentration of the acidic or basic substance also affects its acidity or basicity.
| 4. How can acidity and basicity be measured? | |
The acidity or basicity of a substance can be measured using the pH scale. The pH scale ranges from 0 to 14, with a pH of 7 indicating neutrality. A pH below 7 indicates acidity, with lower numbers indicating stronger acidity. A pH above 7 indicates basicity, with higher numbers indicating stronger basicity. The pH of a solution can be determined using pH indicators or pH meters, which measure the concentration of H+ or OH- ions.
| 5. What are some examples of acidic and basic substances? | |
Examples of acidic substances include lemon juice, vinegar, and hydrochloric acid. These substances have a low pH and can cause a sour taste. On the other hand, examples of basic substances include baking soda, ammonia, and sodium hydroxide. These substances have a high pH and can cause a bitter taste. It's important to note that the acidity or basicity of a substance is relative and can vary depending on the concentration and other factors.
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Oct 27, 2024 Last updated |
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