Asample of 0.0020 mole of hcl is dissolved in water to make 2000 ml solution. what is the molarity of hcl solution, the h3o+, and the ph?

The pH of the solution is 3.

Explanation:

Moles of HCl = 0.0020 mol

Volume of the solution = 2000 mL = 2 L

1 L = 1000 mL

Molarity =

1 mol of HCl forms 1 mole of hydronium ion and 1 mol of chloride ions.

Then 0.0010 M of of HCl forms 0.0010 M of hydronium ion

The molarity of hydronium ion = 0.0010 M

The pH of the solution is defined as negative logarithm of hydronium ion or hydrogen ion concentration in a solution.

The pH of the solution is 3.