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प्रश्न
Three solutions P, Q and R have pH value of 3.5, 5.2 and 12.2 respectively. Which one of these is a:
- Weak acid?
- Strong alkali?
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उत्तर
- On a pH scale, acids have a pH less than 7, whereas weak acids have a pH closer to 7. Therefore, Q is a weak acid with a pH of 5.2.
- On a pH scale, acids have pH less than 7 whereas weak acids have pH towards 7. Hence, Q will be a weak acid with pH 5.2.
संबंधित प्रश्न
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A farmer was unhappy because of his low crop yield. He discussed the problem with an agricultural scientist and realised that the soil of his field was either too acidic or too basic. What remedy would you suggest the farmer to neutralise the soil?
To Interpret:
CH4 and NH3, are not acids.
Match the following:
| 1. | The hardest substance in our body | a. | Aluminum phosphate |
| 2. | Citrus fruits | b. | Potash alum |
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