What would be the ph of a 3x10-4 m solution of acetic acid, Ask an Expert

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What would be the pH of a 3x10-4 M solution of acetic acid (CH3COOH) given its acid dissociation constant Ka = 10-4.75? What are the concentrations of CH3COOH and CH3COO-? What would those concentrations be if you added HCl or NaOH to bring the pH to 3.2 or 7.35, respectively?

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