\textbf{228 –} A solution of two weak acids HA and HD, with ionization percentages of 12 and 2.5 respectively, and equal pH, exists in two separate containers. The ratio of [HD] to [HA] before ionization is given, and if [HA] $= 0.005 \, \text{mol·L}^{-1}$, what is the pH of the two acid solutions? (Read the options from right to left)
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(1) $3.22$ , $4.8$ \hspace{2cm} (2) $3.91$ , $4.8$\\
(3) $3.22$ , $5.6$ \hspace{2cm} (4) $3.91$ , $5.6$
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