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Problem- Consider 250.0mL of a pH 3.50 buffer made with sodium fluoride and hydrofluoric acid with a combined concentration of 0.250 M. a) Write an equation to represent the buffer. b) Calculate how many grams of sodium fluoride and hydrofluoric acid are needed to prepare the buffer. c) Calculate the pH of the buffer after 15.0 mL of 0.10 M NaOH is added to 50 mL of buffer.
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