а.) Ca--CaO--Ca(OH)2-- CaCl2 -- CaSO4;
б.) Ba -- Ba(OH)2 -- Ba(No3)2 -- BaCo3 -- BaCl2;
б.) Ba -- Ba(OH)2 -- Ba(No3)2 -- BaCo3 -- BaCl2;
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Ответ:
a) 2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+2HCl=CaCl2+2H2O
CaCl2+Na2SO4=CaSO4+2NaCl
б) Ba+2H2O=Ba(OH)2+H2
Ba(OH)2+2HNO3=Ba(NO3)2+2H2O
Ba(NO3)2+K2CO3=BaCO3+2KNO3
BaCO3+2HCl=BaCl2+H2O+CO2