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Calculate the pH of the final solution obtained by mixing the following solutions. For HCN, Ka = 6.2 × 10-10.50.0 mL of 0.10 M HNO3
60.0 mL of 0.20 M Ba(OH)2
95.0 mL of 0.20 M HClO4
195.0 mL of 1.0 × 10-4 M HCN
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