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BiCl3
K(-) Bi3+ +3e- => Bi
A(+) 2Cl- => Cl2 + 2e-
2)
56g 18g 74g
----- ------- ------------
CaO + H2O==> Ca(OH)2
----- -------- ------------
7g y gram. x gram
56g CaO --> 74g Ca(OH)2
7g CaO---> x g Ca(OH)2
x= 9,25 g Ca(OH)2
56g CaO = 18 g H2O
7g CaO = y g H2O
y= 2 ,25 g H2O