Răspuns :
CaO+H₂O→Ca(OH)₂
56 g CaO............74 g Ca(OH)₂
112 g CaO............x g Ca(OH)₂
x=112*74/56=148 g g Ca(OH)₂
112kg xkg
CaO + H2O = Ca(OH)2
56kg 74 kg
x=112. 74 : 56=148 kg Ca(OH)2 ( md pentru sol. de Ca(OH)2 )
- se afla ms sol. de Ca(OH)2
ms=md.100 : ms
ms=148 . 100 : 2=7400 kg. sol. var stins
MCaO=40+16=56------> 56k g/kmoli
MCa(OH)2=40 + 2.16 +2=74------> 74 kg/kmoli