Question

which statement is true for a 0.10 m solution of hcl? group of answer choices [h3o ]eq > 0.10 m [h3o ]eq < 0.10 m [h3o ]eq

Answer 1

A 0.10 M solution of HCl has a hydronium ion concentration of [H3O+]eq = 0.10 M because HCl is a strong acid and fully dissociates in solution.

Step-by-step explanation:

The correct statement for a 0.10 M solution of HCl is [H3O+]eq = 0.10 M. Hydrochloric acid (HCl) is a strong acid, which means it dissociates completely in water. Every HCl molecule provides one hydronium ion (H3O+), so the concentration of H3O+ in solution equals the initial concentration of HCl, assuming we can neglect autoionization of water due to the comparatively high concentration of H3O+ from HCl.

Since HCl is a strong acid, for a 0.10 M solution of HCl, we can calculate the pH directly using the formula: pH = -log[H3O+]

Example calculation for the pH of a 0.10 M HCl solution would be: pH = -log(0.10) = 1.00, confirming that the solution is acidic with a pH of 1.00.