17. Acid and Base Equilibrium

The following pictures represent equal volumes of aqueous solutions of three acids HA (A = X, Y, or Z); water molecules have been omitted for clarity. Which is the strongest acid?

(a) HX (b) HY (c) HZ (d) All three acids are strong acids and have equal strength.

The following diagrams represent aqueous solutions of three acids, HX, HY, and HZ. The water molecules have been omitted for clarity, and the hydrated proton is represented as H+ rather than H3O+.(c) Which solution would have the highest pH?

Which of the following solutions is the most acidic? (a) 0.2 M Ba(OH)2, (b) 0.2 M H2SO3, (c) 1.0 M glucose 1C6H12O6).

State whether each of the following statements is true or false. Justify your answer in each case. (b) HCl is a weak acid.

The following pictures represent aqueous solutions of three acids HA1A = X, Y, or Z2; water molecules have been omitted for clarity.

(c) Which acid, if any, is a strong acid?

Locate sulfur, selenium, chlorine, and bromine in the periodic table: (a) Which binary acid 1H2S, H2Se, HCl, or HBr2 is the strongest? Which is the weakest? Explain.

Arrange each group of compounds in order of increasing acid strength. Explain your reasoning. (a) HCl, H2S, PH3

Identify the weakest acid in each of the following sets. Explain your reasoning. (b) NH3, H2O, H2S

Based on molecular structure, arrange the binary compounds in order of increasing acid strength. Explain your choice. H2Te, HI, H2S, NaH