What is the pH of a solution that is
(a) prepared by dissolving 7.85 g of lactic acid (90.08 g/mol) and 10.09 g of sodium lactate (112.06 g/mol) in water and diluting to 1.00 L?
(b) 0.0630 M in acetic acid and 0.0210 M in sodium acetate?
(c) prepared by dissolving 3.00 g of salicylic acid, C6H4(OH)COOH (138.12 g/mol), in 50.0 mL of 0.1130 M NaOH and diluting to 500.0 mL?
(d) 0.0100 M in picric acid and 0.100 M in sodium picrate?
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