JoeyJo8534 JoeyJo8534

22-02-2024
Chemistry

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A solution of weak acid HA was titrated with base NaOH . The equivalent point was reached when 40 m L of 0.1 M NaOH has been added. Now 20 mL of 0.1 M HCl were added to titrated solution, the pH was found to be 5.0 . What will be the pH of the solution obtained by mixing 20 m L of 0.2 M NaOH and 20 mL of 0.2 M HA ?
a.7
b.9
c.11
d.None of the above

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