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pH of a weak monoacidic base from its percent dissociation and concentration

The same question, asked 3 times: May 2022 S1*, 21 Apr 2025 S1*, 25 Apr 2025 S2. Every wording below, oldest first.

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  1. Question 1

    May 2022 S1

    100
    What is the pH of 2×10−32 \times 10^{-3} M solution of monoacidic weak base if it ionises to the extent of 5%?

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  2. Question 2

    21 Apr 2025 S1

    90
    What is the value of pH of a NaOH solution that dissociates 2%2\% in its 0.01 M solution?

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  3. Question 3

    25 Apr 2025 S2

    70
    Calculate the pH of centimolar solution of monoacidic weak base. Which is 10%10\% dissociated in its aqueous solution?

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