What would be the ph if the same amount of hcl were added, Ask an Expert

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suppose 25.00 mL of 0.100 M HCl is added to an acetate buffer prepared by dissolving 0.100 moles of acetic acid and 0.110 moles of sodium acetate in 500 mL of solution. What are the initial and final pH's? What would be the pH if the same amount of HCl were added to the 125 mL of pure water? The Ka of acetic acid is 1.8*10^-5

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