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SO2 
SO3 
H2SO4
BaSO4 
\(S + O_2 \rightarrow^{t^o} SO_2\)
\(2SO_2 + O_2 \rightarrow^{t^o} 2SO_3\)
\(SO_3 + H_2O \rightarrow H_2SO_4\)
\(H_2SO_4 + Ba \rightarrow BaSO_4 + H_2\)
b)
\(CuSO_4 + 2NaOH \rightarrow Cu(OH)_2 + Na_2SO_4\)
\(Cu(OH)_2 \rightarrow^{t^o} CuO + H_2O\)
\(CuO + 2HCl \rightarrow CuCl_2 + H_2O\)
\(CuCl_2 + 2NaOH \rightarrow Cu(OH)_2 + 2NaCl\)
c)
\(K_2O + H_2O \rightarrow 2KOH\)
\(2KOH + H_2SO_4 \rightarrow K_2SO_4 + 2H_2O\)
\(K_2SO_4 + BaCl_2 \rightarrow 2KCl + BaSO_4\)
\(KCl + AgNO_3 \rightarrow KNO_3 + AgCl\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(CuCl_2+2KOH\rightarrow2KCl+Cu\left(OH\right)_2\)
\(Cu\left(OH\right)_2+H_2SO_4\rightarrow CuSO_4+2H_2O\)
\(CuSO_4+BaCl_2\rightarrow CuCl_2+BaSO_4\)
\((1) 2HCl + CuO \to CuCl_2+H_2O\\ (2)CuCl_2+2NaOH \to Cu(OH)_2 +2NaCl\\ (3)Cu(OH)_2+H_2SO_4 \to CuSO_4+2H_2O\\ (4)CuSO_4+Ba(OH)_2 \to BaSO_4+Cu(OH)_2\)
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
\(\text{CuO+2HCl(dung dịch pha loãng)=CuCl2+H2O}\)
\(\text{Ca(OH)2+CuCl2→Cu(OH)2↓+CaCl2}\)
\(\text{Cu(OH)2 → CuO + H2O}\)
\(\text{CuO + H2SO4 → H2O + CuSO4}\)
\(\text{CuSO4(dung dịch pha loãng)+H2=Cu↓+H2SO4}\)
PT cuối sai
\(CuO+2HCl->CuCl_2+H_2O\)
\(CuCl_2+2NaOH->Cu\left(OH\right)_2+2NaCl\)
\(Cu\left(OH\right)_2->CuO+H_2O\) (Nhiệt độ nữa nha bạn)
\(CuO+H_2SO_4->CuSO_4+H_2O\)
\(CuSO_4\:+Fe->FeSO_4+Cu\)
\(Cu+2AgNO_3->Cu\left(NO_3\right)_2+2Ag\)
\(\left(4\right)CuO+H_2SO_4\rightarrow CuSO_4+H_2O\)
\(K_2O,BaO,Na_2O,CaO,Li_2O\) mới td đc với oxit axit chứ a
\(\left(1\right)CuO+2HCl\rightarrow CuCl_2+H_2O\\ \left(2\right)CuCl_2+2KOH\rightarrow Cu\left(OH\right)_2\downarrow+2KCl\\ \left(3\right)Cu\left(OH\right)_2\rightarrow\left(t^o\right)CuO+H_2O\\ \left(4\right)CuO+H_2SO_4\rightarrow CuSO_4+H_2O\)
a/ 2Na + O2 ------> 2Na2O
Na2O + H2O ------> 2NaOH
2NaOH + H2SO4 ------> Na2SO4 + 2H2O
Na2SO4 + BaCl2 ------> BaSO4 + 2NaCl
b/ CuO + CO ------> Cu + CO2 (điều kiện nhiệt độ)
Cu + Cl2 ------> CuCl2 (điều kiện nhiệt độ)
CuCl2 + 2HNO3 ------> Cu(NO3)2 + 2HCl
2Cu(NO3)2 + 2H2O ------> 2Cu + 4HNO3 + O2 (điện phân)
a/ 4Na + O2 ===> 2Na2O
Na2O + H2O ===> 2NaOH
2NaOH + H2SO4 ===> Na2SO4 + 2H2O
Na2SO4 + BaCl2 ===> BaSO4 + 2NaCl
b/ CuO + H2 =(nhiệt)=> Cu + H2O
CuO + 2HCl ===> CuCl2 + H2O
CuCl2 + 2AgNO3 ===> Cu(NO3)2 + 2AgCl
2Cu(NO3)2 ==(nhiệt)==> 2CuO + 4NO2 + O2
( Cái kia là NO2 nhé, không có NO3 đâu bạn à)
a)
(1) \(Cu+2H2SO4\left(đ\right)-^{t0}->CuSO4+SO2\uparrow+2H2O\)
\(\left(2\right)CuSO4+BaCl2->CuCl2+BaSO4\downarrow\)
(3) \(CuCl2+2AgNO3->Cu\left(NO3\right)2+2AgCl\downarrow\)
(4) \(Cu\left(NO3\right)2+2NaOH->Cu\left(OH\right)2\downarrow+2NaNO3\)
(5) \(Cu\left(OH\right)2-^{t0}->CuO+H2O\)
(6) \(CuO+2HCl->CuCl2+H2O\)
(7) \(CuCl2-^{t0}->Cu+Cl2\uparrow\)
(8) \(Cu+Cl2-^{t0}->CuCl2\)
(9) \(CuCl2+2NaOh->Cu\left(OH\right)2\downarrow+2NaCl\)
b)
\(4Na+O2-^{t0}->2Na2O\)
\(Na2O+H2O->2NaOH\)
\(2NaOH+CO2->Na2CO3+H2O\)
\(Na2CO3+H2SO4->Na2SO4+CO2\uparrow+H2O\)
\(Na2SO4+BaCl2->2NaCl+BaSO4\downarrow\)
\(2NaCl+2H2O-\xrightarrow[có-màng-ngăn]{đpdd}2NaOH+Cl2\uparrow+H2\uparrow\)
\(3NaOH+H3PO4->Na3PO4+3H2O\)
2Cu + O2 \(\underrightarrow{t^o}\)2CuO
CuO + 2HCl -> CuCl2 + H2O
CuCl2 + 2NaOH -> Cu(OH)2 + 2NaCl
Cu(OH)2 + H2SO4 -> CuSO4 + 2H2O
CuSO4 + BaCl2 -> CuCl2 + BaSO4
b;
4K + O2 -> 2K2O
K2O + H2SO4 -> K2SO4 + H2O
K2SO4 + BaCl2 -> BaSO4 + 2KCl
a) 2Cu+O2\(\rightarrow\)2CuO
CuO+2HCl\(\rightarrow\)CuCl2+H2O
CuCl2+2NaOH\(\rightarrow\) Cu(OH)2\(\downarrow\) +2NaOH
Cu(OH)2+H2SO4\(\rightarrow\) CuSO4+2H2O
CuSO4+BaCL2\(\rightarrow\) CuCl2+BaSO4\(\downarrow\)
b) 2K+O2\(\rightarrow\) 2K2O
K2O+H2SO4\(\rightarrow\) K2SO4+H2O
K2SO4+Ba(OH)2\(\rightarrow\) BaSO4+2KOH
Chúc bạn học tốt!