CaCl2--->Ca(OH)2 Ca(HCO3)2-->CaO NaOh-->Na Na2O-->Na2SO4

Question

CaCl2--->Ca(OH)2
Ca(HCO3)2-->CaO
NaOh-->Na
Na2O-->Na2SO4

Answer 1

Саcl2+2Naoh=ca(oh)2+2nacl
Ca(Hco3)2=CaCo3+co2+H2o
Naoh+ K=KOH+Na
Na2o+H2so4=Na2so4+h2o