QUESTION 25
Which of the following solutions would have the lowest pH? Assume that they are all 0.10 M in acid at 25°C. The acid is followed
by its $K_a$ value.
$\circ$ HCIO$_2$, 1.1 \times 10$^{-2}$
$\circ$ HF, 3.5 \times 10$^{-4}$
$\circ$ HCN, 4.9 \times 10$^{-10}$
$\circ$ HCHO$_2$, 1.8 \times 10$^{-4}$
$\circ$ HNO$_2$, 4.6 \times 10$^{-4}$