Which one of the following aqueous solutions will have a pH of 2.00 at 25 °C? (K_w = 1.01 × 10^-14) A) 0.020 M HNO₃ B) 2.0 M NaOH C) 10.0 M HBr D) 10.0 M KCl E) 0.010 M HCl

Question

Quizplus · Accepted Answer

The pH of a solution can be calculated using the equation pH = -log[H+]. A lower pH indicates a higher concentration of H+ ions. Among the given options, only option E, 0.010 M HCl, has a high enough concentration of H+ ions to have a pH of 2.00. Using the equation pH = -log[H+], we can find the concentration of H+ ions in the solution: pH = -log(0.010) = 2.00. Therefore, the correct answer is E.

Which One of the Following Aqueous Solutions Will Have a PH