Question

What is the ph of a 0.20 m acetic acid solution? hint: the ka of acetic acid, ch₃cooh, is 1.8 x 10⁻⁵. round your answer to two places past the decimal.

Answer 1

The pH of a 0.20 M acetic acid solution can be calculated using the Ka value of acetic acid. By using the ICE table method and the formula pH = -log[H3O+], we can find the pH of the solution. In this case, the pH of the solution is approximately 2.55.

Step-by-step explanation:

The pH of a solution can be calculated using the formula pH = -log[H3O+]. In this case, we are given the Ka value of acetic acid, which is 1.8 x 10-5. To find the pH of a 0.20 M acetic acid solution, we can use the ICE table method.

Using the given Ka value and the initial concentration of acetic acid, we can calculate the concentration of the hydronium ion [H3O+]. Then, we can use the formula pH = -log[H3O+] to find the pH of the solution.

Using the given values, we find that the concentration of [H3O+] is 2.83 x 10-3 M. Therefore, the pH of the 0.20 M acetic acid solution is approximately 2.55.