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A solution is prepared by mixing 250 mL of 1.00 M CH3COOH with 50 mL of 1.00 M NaCH3COOH. What is the pH of this solution? (Ka for CH3COOH = 1.8X10^-5) 1. 4.74 2. 5.05 3. 5.36 4. 4.58 5. 4.44