a) Ba(OH)2+H2CO3--->BaCO3+2 H2O
Ba2+ +2 OH- +2 H+ +CO3 2- --->BaCO3 +2 H2O
b) Ca(OH)2+2 HNO3--->Ca(NO3)2+2 H2O
Ca2+ +2 OH- +2 H+ +2 NO3- --->Ca2+ +2 NO3- +2 H2O
2 OH- +2 H+ --->2 H2O /:2
OH- +H+ --->H2O
c) Ba(OH)2+H2SO3--->BaSO3+2 H2O
Ba2+ +2 OH- +2 H+ +SO3 2- --->BaSO3 +2 H2O
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a) Ba(OH)2+H2CO3--->BaCO3+2 H2O
Ba2+ +2 OH- +2 H+ +CO3 2- --->BaCO3 +2 H2O
b) Ca(OH)2+2 HNO3--->Ca(NO3)2+2 H2O
Ca2+ +2 OH- +2 H+ +2 NO3- --->Ca2+ +2 NO3- +2 H2O
2 OH- +2 H+ --->2 H2O /:2
OH- +H+ --->H2O
c) Ba(OH)2+H2SO3--->BaSO3+2 H2O
Ba2+ +2 OH- +2 H+ +SO3 2- --->BaSO3 +2 H2O