these is 0.1M HCl of 100ml of that solution in a beaker,calculate pH?
pH = -log(H^+)
pH = -log(0.1) = ??
pH=1
To calculate the pH of a solution, you need to understand that pH is a measure of the acidity or basicity of a solution. It is defined as the negative logarithm (base 10) of the concentration of hydrogen ions (H+) in a solution.
In this case, you have a 0.1 M (molar) hydrochloric acid (HCl) solution with a volume of 100 mL.
To calculate the pH, follow these steps:
1. Convert the solution volume to liters:
100 mL = 100/1000 = 0.1 L
2. Use the concentration of HCl to determine the concentration of hydrogen ions (H+):
The concentration of H+ ions is equal to the concentration of the acid since HCl ionizes completely. In this case, it is 0.1 M.
3. Calculate the negative logarithm (base 10) of the H+ concentration:
pH = -log[H+]
pH = -log(0.1)
Using a calculator, you can calculate -log(0.1) to find the pH.
pH ≈ 1
Therefore, the pH of the 0.1 M HCl solution is approximately 1.