\(Fe\left(OH\right)_3+3HCl\rightarrow FeCl_3+3H_2O\)
\(2KOH_{\left(dư\right)}+H_2SO_4\rightarrow K_2SO_4+2H_2O\)
\(NaOH+H_2SO_{4\left(dư\right)}\rightarrow NaHSO_4+H_2O\)
\(Cu\left(OH\right)_2\underrightarrow{t^o}CuO+H_2O\)
\(2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)
\(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)