1)
KOH + CuCl = CuOH ↓ + KCl
K[+] + OH[-] + Cu[1+] + Cl[-] = CuOH ↓ + K[+] + Cl[-]
Cu[1+] + OH[-] = CuOH ↓
2)
CaO + H2SO4 = CaSO4 ↓ + H2O
CaO + 2H[+} + SO4[2-] = CaSO4 ↓ + H2O
3)
BaCl2 + H2SO4 = BaSO4 ↓ + 2HCl
Ba[2+] + 2Cl[-] + 2H[+] + SO4[2-] = BaSO4 ↓ + 2H[+] + 2Cl[-]
Ba[2+] + SO4[2-] = BaSO4 ↓
1)
KOH + CuCl = CuOH ↓ + KCl
K[+] + OH[-] + Cu[1+] + Cl[-] = CuOH ↓ + K[+] + Cl[-]
Cu[1+] + OH[-] = CuOH ↓
2)
CaO + H2SO4 = CaSO4 ↓ + H2O
CaO + 2H[+} + SO4[2-] = CaSO4 ↓ + H2O
3)
BaCl2 + H2SO4 = BaSO4 ↓ + 2HCl
Ba[2+] + 2Cl[-] + 2H[+] + SO4[2-] = BaSO4 ↓ + 2H[+] + 2Cl[-]
Ba[2+] + SO4[2-] = BaSO4 ↓