Consider a 0.14 M solution of a weak polyprotic acid () with the possible values of and given here. Calculate the contributions to

[] from each ionization step. At what point can the contribution of the second step be neglected?

Part c I need to show all work

Consider a 0.10 M solution of a weak polyprotic add (H_2 A) with the possible values of K_a1, and K_a2 given below. Calculate the contributions to [H_3 O^+] from each ionization step. K_a1 = 1.0 times 10^-4: K_a2 = 5.0 times 10^-5 Express your answers using two significant figures separated by commas. K_a1 = 1.0 times 10^-4: K_a2 = 1.0 times 10^-5 Express your answers using two significant figures separated by commas.

PROBLEM The first ionization in diprotic acids provides virtually all [H0+]. One mportant exception to this rule occurs for H2SO, in which the first ionization step is 100% complete. The second step has a relatively large 0012 and does contribute H,O must be considered in calculating the pH. Calculate the pH and equilibrium concentrations of [H2SO (HSO, and [SO-for a 0.025-M sulfuric acid. (See Interactive Example 13-16 and Example 13-17.)