$NaI$  

$NaOH+HI\to NaI+H_{2}O$  

 

$FeS$

$FeO+H_{2}S\to FeS+H_{2}O$  

 

$CuC{l}_2$  

$Cu{\left(OH\right)}_2+2HCl\to CuC{l}_2+2H_{2}O$  

 

$AlB{r}_3$  

$A{l}_2{O}_3+6HBr\to 2AlB{r}_3+3H_{2}O$