A. 24,94
B. 23,02
C. 22,72
D. 30,85
A
\(\xrightarrow{{}}\left\{ \begin{gathered} \xrightarrow{{2t}}catot\left\{ \begin{gathered} Cu:a \hfill \\ {H_2}:0,05 \hfill \\ \end{gathered} \right.\xrightarrow{{}}anot\left\{ \begin{gathered} C{l_2}:b \hfill \\ {O_2}:\frac{{2a + 0,1 - 2b}}{4} \hfill \\ \end{gathered} \right. \hfill \\ \xrightarrow{t}catot\left\{ \begin{gathered} Cu:0,5a + 0,025 \hfill \\ {H_2}:0 \hfill \\ \end{gathered} \right.\xrightarrow{{}}anot\left\{ \begin{gathered} C{l_2}:b \hfill \\ {O_2}:\frac{{a + 0,05 - 2b}}{4} \hfill \\ \end{gathered} \right. \hfill \\ \end{gathered} \right.\)
\(\xrightarrow{{}}\left\{ \begin{gathered} 80a + 55b + 0,9 = 12,2 \hfill \\ 40a + 55b + 2 = 9,3 \hfill \\ \end{gathered} \right.\xrightarrow{{}}\left\{ \begin{gathered} a = 0,1 \hfill \\ b = 0,06 \hfill \\ \end{gathered} \right.\xrightarrow{{}}m = 24,94\left\{ \begin{gathered} CuS{O_4}:0,1 \hfill \\ KCl:0,12 \hfill \\ \end{gathered} \right.\)
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