Răspuns:
miu,CaCL2.6H2O=miuCaCL2 + 6miu,H2O
(111g+108g)/mol
219g cristalohidrat,,,,,,,,,111g CaCl2
100g...........................................x
x=m=50.68gCaCl2
111g................98g,,,,,,,,,,,,,136g
CaCl2 + H2SO4----> CaSO4 + 2HCL
50,68g...........x..................y
x=44,74gH2SO4
y= 62,09g CaSO4
miu,CaSO4.2H2O=142g/mol
136gCaSO4.............142g cristalohidrat
62,09g...................................x
x=64,83g
e bine sa cerifici calculele !
Explicație: