Question

The hydrogen ion concentration, [H+], of a 0.0010 M HNO₃ solution is?

1) 1.0 x 10⁻⁴ M
2) 1.0 x 10⁻³ M
3) 1.0 x 10⁻² M
4) 10 M

Answer 1

The hydrogen ion concentration of a 0.0010 M HNO3 solution is 1.0 x 10^-3 M because HNO3 is a strong acid and dissociates completely.

Step-by-step explanation:

The hydrogen ion concentration, [H+], of a 0.0010 M HNO3 solution can be determined by considering that HNO3 is a strong acid, which dissociates completely in aqueous solution.

Since HNO3 releases one mole of H+ for every mole of acid dissolved, the concentration of hydrogen ions in the solution will be equal to the concentration of the HNO3 solution itself. Therefore, the hydrogen ion concentration in a 0.0010 M HNO3 solution is 1.0 x 10-3 M.