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Which of the following statements are correct about an aqueous solution of an acid and a base? 1. Higher the pH, stronger is the acid. 2. Higher the pH, weaker is the acid. 3. Lower the pH, stronger is the base. 4. Lower the pH, weaker is the base.

Which of the following statements are correct about an aqueous solution of an acid and a base? 1. Higher the pH, stronger is the acid. 2. Higher the pH, weaker is the acid. 3. Lower the pH, stronger is the base. 4. Lower the pH, weaker is the base. Correct Answer 2 and 4

Concept:

The pH Scale

  • The pH is the measure of the concentration of acid in the solution. 
  • It is measured from the scale of 1 to 14. 
  • If the solution is acidic or basic, depends upon the following parameters. 
  • pH < 7 - Acidic
  • pH > 7 - Basic
  • pH = 7 - Neutral

​Conclusion:

  • So, from the above explanation, it is clear that the Higher the pH, the weaker is the acid, and the Lower the pH, the weaker is the base.
  • So, Statements 2 and 4 are correct. ​

Additional Information

pH VALUE

EXAMPLES

0

battery acid

1

gastric acid

2

lemon juice, vinegar

3

orange juice, soda

4

tomato juice, acid rain

5

black coffee, bananas

6

urine, milk

7

pure water, neutral solution

8

seawater, eggs

9

baking soda

10

milk of magnesia

11

ammonia solution

12

soapy water

13

bleach, oven cleaner

14

liquid drain cleaner

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