A solution is prepared by diluting concentration HNO3 to 2.0 M,Calculate PH.
HNO3 is a strong acid; i.e., it ionizes 100%. So 2M HNO3 = (H^+) = 2M
pH = -log(H^+) = -log(2) = -(0.301) = -0.301
To calculate the pH of a solution, we need to know the concentration of HNO3, as you mentioned it is 2.0 M. However, we also need to know if HNO3 is a strong acid, as it dissociates completely in water, or a weak acid, as it only partially dissociates.
In the case of HNO3, it is a strong acid, so it will dissociate fully in water to produce H+ ions. This means that the concentration of H+ ions will be the same as the concentration of HNO3.
So, in this case, the concentration of H+ ions is 2.0 M. Since pH is defined as the negative logarithm of the concentration of H+ ions, we can calculate the pH using the following formula:
pH = -log[H+]
Substituting the given concentration of H+ ions:
pH = -log(2.0) ≈ -0.301
Therefore, the pH of the solution is approximately 0.301.