The pH of an aqueous solution of 0.477 M benzoic acid , C6H5COOH is

The concentration of hydroxide ion in an aqueous solution at 25 °C is 2.2 × 10⁻⁴ M. What is the concentration of the hydronium ion?

For the diprotic weak acid H2A, Kal =3.4 •10^-6 and Ka2=8.5 •10^-9. what is the pH of a 0.0700M solution of H2A? pH=What are the equilibrium concentrations of H2A and A2- in this solution? [H2A]=M [A2-]=M

pHpH is a logarithmic scale used to indicate the hydrogen ion concentration, [H+], of a solution: pH=−log[H+] Due to the autoionization of water, in any aqueous solution, the hydrogen ion concentration and the hydroxide ion concentration, [OH−], are related to each other by the Kw of water: Kw=[H+][OH−]=1.00×10^−14 where 1.00×10^−14 is the value at approximately 297 K. Based on this relation, the pH and pOH are also related to each other as 14.00=pH+pOH The temperature for each solution is carried out at approximately 297 K where Kw=1.00×10^−14 A. 0.20 g of hydrogen chloride (HCl) is dissolved in water to make 5.5 L of solution. What is the pH of the resulting hydrochloric acid solution? B. 0.20 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 3.0 L of solution. What is the pH of this solution? C. Calculate the concentration of HSO4− ions in a 0.010 M aqueous solution of sulfuric acid.