Question

The pH of a solution of a 0.500 M weak acid HA is 2.05. Calculate the percent dissociation (ionization) of this solution.

Answer 1

To calculate the percent dissociation of a solution, you need to determine the concentration of ions and the initial concentration of the acid. Then you can use the formula: Percent Ionization = (concentration of ions / initial concentration of acid) x 100%

Step-by-step explanation:

The percent ionization for an acid is calculated using the formula:

Percent Ionization = (concentration of ions / initial concentration of acid) x 100%

In this case, the initial concentration of the weak acid HA is given as 0.500 M, so we need to determine the concentration of H+ ions. We can calculate this using the formula:

pH = -log([H+])

Substituting the given pH value of 2.05 into the formula, we can solve for [H+]. Once we have [H+], we can use it to calculate the percent ionization using the formula mentioned earlier.