The pH of a 10-4 M solution of HCl is Question 2 options: 3. 3.5. 4. 4.5. greater than 4.5.
Question
The pH of a 10^-4 M solution of HCl is
Question 2 options:
-
- 3.5.
-
- 4.5.
- greater than 4.5.
Solution
The pH of a solution is calculated using the formula pH = -log[H+], where [H+] is the concentration of hydrogen ions in the solution.
In this case, the HCl is a strong acid and will completely dissociate in water to form H+ and Cl- ions. Therefore, the concentration of H+ ions is equal to the concentration of the HCl solution, which is 10^-4 M.
Substituting this into the formula gives:
pH = -log(10^-4) = 4
So, the pH of a 10^-4 M solution of HCl is 4.
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