How do you find the pH of a 0.2M HCL?
HCl is completely ionized.
So, one gets one H+ for each HCl molecule. The concentration of HCl is .2M, so the concentration of the H+ is .2M
Then, the defintion of pH
pH= - log .2= you do it.
how is 500 ml of 025m sucrose
solution prepared
To find the pH of a strong acid like HCl (hydrochloric acid), you can use the equation pH = -log[H+].
1. First, determine the concentration of HCl, which is given as 0.2M (0.2 moles per liter).
2. Next, calculate the concentration of H+ ions since HCl is a strong acid and fully dissociates in water. Since HCl has a 1:1 ratio of H+ ions to HCl molecules, the concentration of H+ ions is also 0.2M.
3. Now, plug the concentration of H+ ions (0.2M) into the equation pH = -log[H+] to find the pH.
- Calculating (-log 0.2) will give you the answer.
For example, pH = -log(0.2) = 0.7.
Therefore, the pH of a 0.2M HCl solution is approximately 0.7.