А
1) 2Ba+02=2Ba0
2)Ba0+2HN03=Ba(N03)2+H20
3)Ba(N03)2+Na2S04=BaS04+2NaN03
4)BaS04+2HСl=Bacl2+2H2S04
Б
1) Cu+HN03=Cu(NO3)2+NO+H2O
2)Cu(NO3)2+2KOH=Cu(0H)2+2KN03
3)Cu(0H)2=CuO + H2O
4)CuO+HCl=CuCl2+H20
Объяснение:
А
1) 2Ba+02=2Ba0
2)Ba0+2HN03=Ba(N03)2+H20
3)Ba(N03)2+Na2S04=BaS04+2NaN03
4)BaS04+2HСl=Bacl2+2H2S04
Б
1) Cu+HN03=Cu(NO3)2+NO+H2O
2)Cu(NO3)2+2KOH=Cu(0H)2+2KN03
3)Cu(0H)2=CuO + H2O
4)CuO+HCl=CuCl2+H20
Объяснение: