Which of the following solutions would have the highest pH? Assume that they are all 0.10 mol L^-1in acid at 25 °C? The acid is followed by its K_a value. A) HF, 3.5 × 10^-4 B) HCN, 4.9 × 10^-10 C) HNO₂, 4.6 × 10^-4 D) HCHO₂, 1.8 × 10^-4 E) HClO₂, 1.1 × 10^-2

Question

Quizplus · Accepted Answer

The higher the value of pKa (the negative logarithm of Ka), the weaker the acid and the higher the pH of the solution. Among the given options, HCN has the highest pKa (10.31), indicating that it is the weakest acid and its solution would have the highest pH.

Which of the Following Solutions Would Have the Highest PH