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Acids, Bases and Salts
State the differences between acids and bases.
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– |
Acids |
Bases |
| (i) | These are sour to taste. | These are bitter to taste. |
| (ii) | Acids turn blue litmus red. | Bases do not change the colour of blue litmus. |
| (iii) | Acids do not change the colour of red litmus. | Bases turn red litmus blue. |
| (iv) | With china rose indicator, these give dark pink colour. | Bases give green colour with china rose indicator. |
| (v) | Acids do not change the colour of turmeric indicator. | Bases turn the colour of turmeric indicator to red. |
Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?
Ammonia is basic in nature as it turns the colour of red litmus paper to blue.
Name the source from which litmus solution is obtained. What is the use of this solution?
Litmus solution is obtained from lichens. A natural dye extracted from lichens is dissolved in distilled water to obtain litmus solution.
It is used as an indicator to distinguish between acids and bases.
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Solution
Colour of litmus solution
Acidic
Red
Basic
Blue
Neutral
No change
Is the distilled water acidic/basic/neutral? How would you verify it?C
Distilled water is neutral in nature. The same can be verified by using red and blue litmus papers. Neither will show a colour change with distilled water. This proves that distilled water is neutral.
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Mock Test Series
Mock Test Series