When dissolved in water, the following compounds act as acids

All of the following are properties of an acid except:

Which is the strongest binary acid among H₂Te, H₂Se, H₃As and H₃Sb? Which is the weakest? Why?

Determine the values of [H₃O⁺] and [OH⁻] for a solution with a pH of 8.92 at 25°C.

Three unknown bases were titrated. At the equivalence point, base A had a pH of 3.67, base B had a pH of 6.91, and base C had a pH of 4.28. Identify the strongest base and the weakest base.

Soda water is saturated with CO₂ at a partial pressure of 5.25 atm at 25°C. Calculate the pH of the soda water at 25°C given that Henry's law constant for CO₂ at this temperature is 3.1×10^–2 mol/L•atm. [H₂CO₃: K_a1 = 4.3×10^–7; K_a2 = 5.6×10^–11]