Which of the following option correctly represents the pH value of an acid and a base?

Acid - 7 and base - 5

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Acid - 3 and base - 7

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Acid - 8 and base - 5

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Acid - 3 and base - 9

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Solution

The correct option is D
Acid - 3 and base - 9

pH plays a crucial role in determining whether the substance is acidic, basic or neutral in nature. The substances which are acidic in nature have pH value between 0 to 6. The substances which are basic in nature have pH value between 8 to 14. The substances which are neutral in nature have pH value equal to 7. Therefore, here option (d) is correctly representing the pH value of an acid and a base.

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Which of the following correctly represents conjugate acid-base pair?

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