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Basic Buffer Action

24. If the pH...

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24. If the pH of a base is 14 at 25 C then on increasing temp to 35 C 1) ph will be more than 14 2) less than 14 3) equal to 14

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Q. Assertion :A solution with a pH of

12

has a higher concentration of hydroxide ions than a solution with a pH of 10 Reason: At

25^{o} C

14

.

Q. Arrange the following pH values in decreasing order of their basic nature.
pH = 8, pH = 11, pH = 14,

Between pH value of 7 to 14, As pH increases:

P (A) = \frac{2}{3}, P (B) = \frac{4}{9}

P (A \cap B) = \frac{14}{45}

P (A^{'} \cap B^{'}) = \frac{14}{45}

is greater than or equal to

C a (O H)_{2} + N a_{2} C O_{3} \to C a C O_{3} ↓ + 2 N a O H

This reaction made the basis of manufacturing of NaOH in earlier days and pH of the solution was found to be greater than 14. This indicates that concentration of NaOH is very high. Hence, pH is greater than 14.
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