Question: Can anyone help me with this question? A solution contains 0.399MHA(Ka=3.53104) and 0.505MNaA. What is the pH of this solution? What is the pH of

Can anyone help me with this question?

A solution contains 0.399MHA(Ka=3.53104) and 0.505MNaA. What is the pH of this solution? What is the pH of this solution after 0.129mol of HCl are added to 1.00L of this solution? What is the pH of this solution after 0.258mol of HCl are added to 1.00L of this solution

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