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A 0.002 M weak base NaA is dissolved in water. The equilibrium solution pH is 10. Determine the pka of its conjugate acid HA. What

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A 0.002 M weak base NaA is dissolved in water. The equilibrium solution pH is 10. Determine the pka of its conjugate acid HA. What will be the pH of the solution if 0.1 M of HA is dissolved in water? (4 marks)

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