Question

zno-zncl2-znoh2-al(oh)3-al2o3

Answer 1

$ZnO + 2HCl = ZnCl_{2} + H_{2}O$

$ZnCl_{2}  + 2KOH = Zn(OH)_{2}  + 2KCl$ ↓

$3Zn(OH)_{2}  + 2AlCl_{3}  = 2Al(OH)_{3}  + 3ZnCl_{2}$

$2Al(OH)_{3}  = Al_{2} O_{3}  + 3H_{2} O$