231 – The pH of a sample solution of 0.2 g per liter of weak acid HA with molar mass 20 g/mol equals 4.22. The acid ionization constant at the temperature of the experiment is approximately how much, and what percentage of it is ionized? (Options are from right to left; read $\frac{1}{10^{0.22}} = 0.6$) $$\left(\frac{1}{10^{0/\text{rr}}} = 0/6\right)$$ (1) $0/6\ ,\ 3/6\times10^{-7}$ (2) $0/4\ ,\ 3/6\times10^{-7}$ (3) $0/7\ ,\ 4/9\times10^{-7}$ (4) $0/5\ ,\ 4/9\times10^{-7}$
\textbf{231 –} The pH of a sample solution of 0.2 g per liter of weak acid HA with molar mass 20 g/mol equals 4.22. The acid ionization constant at the temperature of the experiment is approximately how much, and what percentage of it is ionized? (Options are from right to left; read $\frac{1}{10^{0.22}} = 0.6$)
$$\left(\frac{1}{10^{0/\text{rr}}} = 0/6\right)$$
(1) $0/6\ ,\ 3/6\times10^{-7}$ \quad (2) $0/4\ ,\ 3/6\times10^{-7}$ \quad (3) $0/7\ ,\ 4/9\times10^{-7}$ \quad (4) $0/5\ ,\ 4/9\times10^{-7}$