Specifically, the question is "If acetic acid is the only acid that vinegar contains (Ka = 1.8 x 10-5) calculate the concentration of acetic acid in the vinegar." "Given pH = 3.15"

The ionization constant of acetic acid HC2H3O2 is 1.8 x 10-5. What will be the pH of a 0.10 M HC2H3O2 solution which is 0.10 M in NaC2H3O2

If the bicarbonate ion (HCO3-) concentration in a sample of blood is 0.270 M, determine the carbonic acid (H2CO3) concentration required to buffer the pH of blood at pH = 7.45.                H2CO3(aq)  ⇌  HCO3-(aq) + H+(aq)                                 Ka = 5.3 × 10-7 Show all calculations including equation(s) used. Provide your final answer to 3 decimal places.

A solution of HCN was prepared in 2.5 L of water.  The pH of this solution at 25°C was determined to be 4.87. The Ka for hydrocyanic acid is 6.17 × 10-10. How many moles of HCN were used to prepare the solution? Report your answer to the hundredths place