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Cu → CuO → CuCl2 → Cu(OH)2 → CuO →CuSO4
AlCl3 →Al(OH)3 →Al2O3 →Al2(SO4)3 →Al(OH)3 →Al(OH)2Cl
Na2O →NaOH →NaHSO4 →Na2SO4
CaCO2 →CaO →Ca(OH)2 →Ca(HCO3)2 →CO2
Cu → CuO → CuCl2 → Cu(OH)2 → CuO →CuSO4
AlCl3 →Al(OH)3 →Al2O3 →Al2(SO4)3 →Al(OH)3 →Al(OH)2Cl
Na2O →NaOH →NaHSO4 →Na2SO4
CaCO2 →CaO →Ca(OH)2 →Ca(HCO3)2 →CO2
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2Cu + O2 → 2CuOCuO + 2HCl → CuCl2 + H2O
CuCl2 + 2KOH → Cu(OH)2↓ + 2KCl
Cu(OH)2 → CuO + H2O
CuO + H2SO4 → CuSO4 + H2O
AlCl3 + 3NaOH → Al(OH)3↓ + 3NaCl
2Al(OH)3 → Al2O3 + 3H2O
Al2O3 + 3H2SO4 → Al2(SO4)3 + 3H2O
Al2(SO4)3 + 6KOH → 2Al(OH)3↓ + 3K2SO4
Al(OH)3 + HCl → Al(OH)2Cl + H2O
Na2O + H2O → 2NaOH
NaOH + H2SO4 → NaHSO4 + H2O
NaHSO4 + NaOH → Na2SO4 + H2O
CaCO3 → CaO + CO2↑
CaO + H2O → Ca(OH)2
Ca(OH)2 + H2CO3 → Ca(HCO3)2 + H2O
Ca(HCO3)2 → CaCO3↓ + CO2↑ + H2O