0.0020 mole of HCl is dossolved in water to make a 2000ml solution. Calculate the molarity of the HCl solution, the H30, and the pH. The H30 is the same as the molarity of the HCl solution.
M = moles/L
pH = -log(H^+)
To calculate the molarity of the HCl solution, we need to use the formula:
Molarity (M) = Number of moles / Volume of solution (in liters)
Given information:
Number of moles = 0.0020 moles
Volume of solution = 2000 ml = 2000/1000 = 2 liters
Calculating the molarity:
Molarity (M) = 0.0020 moles / 2 liters = 0.001 M
Therefore, the molarity of the HCl solution is 0.001 M.
Since HCl is a strong acid, it completely dissociates in water to form H3O+ ions, making the concentration of H3O+ ions the same as the molarity of the HCl solution.
Thus, the concentration of H3O+ ions in the solution is 0.001 M.
The pH of a solution can be calculated using the formula:
pH = -log[H3O+]
Calculating the pH:
pH = -log(0.001) = -(-3) = 3
Therefore, the pH of the HCl solution is 3.
To calculate the molarity of the HCl solution, you need to use the formula:
Molarity (M) = moles of solute / volume of solution in liters
Given that you have 0.0020 mole of HCl and a solution volume of 2000 mL (which is equivalent to 2.000 L):
Molarity (HCl) = 0.0020 mol / 2.000 L = 0.001 M
So, the molarity of the HCl solution is 0.001 M.
Since the HCl is a strong acid, it completely dissociates in water, resulting in the formation of H3O+ ions. Therefore, the concentration of H3O+ ions (also known as the concentration of H+) is the same as the molarity of the HCl solution.
Hence, the H3O+ concentration (H+) is 0.001 M.
To calculate the pH, we can use the equation:
pH = -log[H+]
Substituting the concentration of H3O+ ions into the equation:
pH = -log(0.001) = -(-3) = 3
Therefore, the pH of the HCl solution is 3.