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Which of the following mixtures would result in the pK, of the acid being obtained from a direct pH
measurement of the resulting solution?
A. 25 cm³ 0.1 mol dm^-3 HCl and 25 cm^3 0.1 mol dm^-3 NaCl
B. 25 cm³ 0.1 mol dm^-3 NaOH and 25 cm³ 0.1 mol dm^-3 CH3COOH
C. 12.5 cm³ 0.1 mol dm^-3 CH3COOH and 25 cm³ 0.1 mol dm^-3 NaOH
D. 12.5 cm³ 0.1 mol dm^-3 NaOH and 25 cm³ 0.1 mol dm^-3 CH3COOH



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