Which one of the following aqueous solutions will have a pH of 2.00 at 25 $\circ$ C? (K_w = 1.01 $\times$ 10^-14)

Question

Quizplus · Accepted Answer

The solution with pH of 2.00 indicates that it is acidic. The only acidic solution from the given options is 0.010 M HCl. HCl is a strong acid and will completely dissociate in water to form H+ ions. pH of a 0.010 M HCl solution can be calculated using the formula:
pH = -log[H+]
pH = -log(0.010) = 2.00
Therefore, option E is the best choice.

Which One of the Following Aqueous Solutions Will Have a PH