1/ \(CuCl2+2AgNO3->Cu\left(NO3\right)2+AgCl\downarrow\)
\(Cu\left(NO3\right)2+2NaOH->Cu\left(OH\right)2\downarrow+2NaNO3\)
\(Cu\left(OH\right)2+H2SO4->C\text{uS}O4+2H2O\)
\(C\text{uS}O4+BaCl2->CuCl2+B\text{aS}O4\downarrow\)
2/
\(2Ca+O2-^{t0}->2CaO\)
\(CaO+H2O->Ca\left(OH\right)2\)
\(Ca\left(OH\right)2+H2NO3->Ca\left(NO3\right)2+2H2O\)
\(Ca\left(NO3\right)2+H2SO4->C\text{aS}O4_{\left(\text{ít}-tan\right)}+2HNO3\)
3/
\(4K+O2-^{t0}->2K2O\)
\(K2O+H2O->2KOH\)
\(2KOH+C\text{uS}O4->K2SO4+Cu\left(OH\right)2\downarrow\)
\(K2SO4+Ba\left(NO3\right)2->2KNO3+B\text{aS}O4\downarrow\)
~ CHÚC BẠN HỌC TỐT ! ~ (^ω^)
2,
2Ca+O2==2CaO
CaO+H2O==Ca(OH)2
Ca(OH)2+Mg(NO3)2==Ca(NO3)2+Mg(OH)2\(\downarrow\)
Ca(NO3)2+K2SO4==Ca(SO4)+2KNO3
3,
4K+O2==2K2O
K2O+H2O==2KOH
KOH+CuSO4==K2SO4+Cu(OH)2
K2SO4+Ba(NO3)2==2KNO3+BaSO4
