Giúp mình với ạaaaaaa

Em tham khảo nha:

\(\begin{array}{l}
a)\\
\text{ Nhóm OH } :{C_2}{H_5}OH\\
\text{ Nhóm COOH }:C{H_3}COOH\\
b)\\
2C{H_3}COOH + 2K \to 2C{H_3}COOK + {H_2}\\
2C{H_3}COOH + BaC{O_3} \to {(C{H_3}COO)_2}Ba + C{O_2} + {H_2}O\\
C{H_3}COOH + KOH \to C{H_3}COOK + {H_2}O\\
2C{H_3}COOH + Zn \to {(C{H_3}COO)_2}Zn + {H_2}\\
2{C_2}{H_5}OH + 2K \to 2{C_2}{H_5}OK + {H_2}\\
C{H_3}COO{C_2}{H_5} + KOH \to C{H_3}COOK + {C_2}{H_5}OH
\end{array}\)