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प्रश्न
What is the difference between an alkali and a base?
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उत्तर
| Alkali | Base | |
| 1. | An alkali is a basic hydroxide that, when dissolved in water, produces hydroxyl (OH−) ions, the only negatively charged ions. | A base is a chemical compound that, when reacting with a hydronium ion or H+ ions furnished by an acid, forms salt and water only. |
| 2. | All alkalis are water soluble. | Bases may or may not be water soluble. |
| 3. | All alkalis are bases | All bases are not alkalis. |
| 4. | Examples are NaOH, KOH, Ca(OH)2. | Examples are CuO, Mg(OH)2. |
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संबंधित प्रश्न
Give one example in the following case:
A basic oxide which is soluble in water.
Give one example in the following case:
A hydroxide which is insoluble in water.
Give one example in the following case:
A base which is not an alkali.
How would you obtain an alkali from a base.
Why indicator does not get affected by salt?
Which of the following is not a base?
When the soil is too basic, plants do not grow well in it. To improve its quality what must be added to the soil?
What does the acidity of the base mean?
Al(OH)3 & Zn(OH)2 are not alkalis.
A small amount of copper oxide was taken in a beaker and dilute hydrochloric acid was added with continuous stirring of the solution. Name the compound formed and state the colour of its solution. Write the balanced chemical equation for the reaction that occurs. Based on the reaction, state the nature (acidic/basic) of copper oxide.
