Question

Ba-BaO-Ba(NO3)2-BaOH-BaCl2 Ba-BaO-Ba(NO3)2-BaOH-BaSO4

Answer 1

2Ba+O2=2BaO
BaO+2HNO3=Ba(NO3)2+H2O
H2O+BaO=Ba(OH)2
1)Ba(OH)2+MgCl2=BaCl2+Mg(OH)2↓
2)Ba(OH)2+H2SO4=BaSO4↓+2H2O

Answer 2

2Ва + О2-> 2ВаО
ВаО+ 2HNO3 -> Ba(NO3)2 + H2O
Ba(NO3)2 + 2NaOH -> Ba(OH)2 + 2NaNO3
Ba(OH)2 + 2HCl-> BaCl2 + 2H2O

2Ba+O2-> 2BaO
BaO+ 2HNO3 -> Ba(NO3)2 + H2O
Ba(NO3)2 ++ 2NaOH -> Ba(OH)2++ 2NaNO3
Ba(OH)2 + H2SO4 -> BaSO4 + 2H2O