Methanoic acid molecules, $\mathrm{HCO_2H}$, and hydrogen carbonate ions, $\mathrm{HCO_3^-}$, are both able to act as acids. Why is the pH of a methanoic acid solution lower than that of a sodium hydrogen carbonate solution at the same concentration?
- A1, 2 and 3 are correct
- B1 and 2 only are correct
- C2 and 3 only are correct
- D1 only is correct