a. Calculate change in pH when 50 mL of a buffer is added with 5 mL of 0.10 M NaOH. The buffer has a concentration of 0.10 M acetic acid-acetate buffer with pH of 4.7. The pKa of acetic acid is 4.76.
a. Calculate change in pH when 50 mL of a buffer is added with 5 mL of 0.10 M NaOH. The buffer has a concentration of 0.10 M acetic acid-acetate buffer with pH of 4.7. The pKa of acetic acid is 4.76.
b. How many grams of NaF (41.98817 g/mol) would have to be added to 2.00 L of 0.100 M HF (20.01 g/mol) to yield a solution with a pH of 4.00. The pKa of HF is 3.80?
c. Calculate the pH of a buffer solution prepared by mixing 25 mL of 0.5 M lactic acid and 75 mL of 1.0 M sodium lactate. Ka 1.38 x 10⁻⁴
d.Calculate the pOH of 1.5 x 10⁻⁷ M HCl solution.
e. What is the pH of a 0.150 M aqueous solution of Magnesium hydroxide (Mg(OH)₂)?
f. Calculate the hydrogen ion concentration, [H+], Blood plasma, pH 7.4
g. A stock solution has a concentration of 0.05 M. Which of the following concentrations might be the concentration of the final solution when diluted?
h. A buffer system with pKa of 6.4. Which of the following pH is reasonable when a base is added to the buffer solution?
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