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