Calculate the pH of stomach acid with given concentration of HCl
Calculation of pH of stomach acid with [HCl] = 0.149 M
Stomach acid is mainly composed of hydrochloric acid (HCl). In order to determine the pH of stomach acid with a concentration of HCl equal to 0.149 M, we can use the formula pH = -log[H3O+].
Given:
[HCl] = 0.149 M
Final answer:
The pH of stomach acid with [HCl] = 0.149 M can be calculated using the formula pH = -log[H3O+]. For HCl, [H3O+] is equal to [HCl], so the calculation is pH = -log(0.149).
Explanation:
To calculate the pH of stomach acid with a given concentration of HCl, you can use the pH formula: pH = -log[H3O+], where [H3O+] is the hydronium ion concentration which is equal to [HCl] for strong acids like HCl.
Using the provided concentration of HCl (0.149 M), we assume complete dissociation because HCl is a strong acid. Therefore, [H3O+] = [HCl] = 0.149 M.
The calculation would then be: pH = -log(0.149). Using a calculator, you would type in "0.149", press the "log" button, and then the +/- button to get the negative log. This will give you the pH value.
How do you calculate the pH of stomach acid with a given concentration of HCl? To calculate the pH of stomach acid with a given concentration of HCl, you can use the formula pH = -log[H3O+], where [H3O+] is the hydronium ion concentration which is equal to [HCl] for strong acids like HCl. In this case, with [HCl] = 0.149 M, the calculation would be pH = -log(0.149).