Объяснение:
1) NH4Cl + NaOH = NaCl + NH3 + H2O
NH4(+)+ Cl(-)+ Na(+) + OH(-) = Na(+) + Cl(-)+ NH3 + H2O
NH4(+)+ OH(-) = NH3 + H2O
2) NH4OH + HCl = NH4Cl + H2O
NH4OH+ H(+)+ Cl(-)= NH4(+)+ Cl(-)+ H2O
NH4OH + H(+) = NH4(+) + H2O
3) Na2CO3 + 2HCl = 2NaCl + CO2 + H2O
2Na(+) + CO3(2-) + 2H(+) + 2Cl(-) = 2Na(+) + 2Cl(-) + CO2 + H2O
CO3(2-) + 2H(+) = CO2 + H2O
4) Pb(OH)2 + 2NaOH = Na2PbO2 + 2H2O
Pb(OH)2 + 2Na(+) + 2OH(-) = 2Na(+) + PbO2(2-)+ 2H2O
Pb(OH)2 + 2OH(-)= PbO2(2-) + 2H2O
5) Cd(NO3)2 + 2NaOH = Cd(OH)2 + 2NaNO3
Cd(2+) + 2NO3(-)+ 2Na(+) + 2OH(-) = Cd(OH)2 + 2Na(+) + 2NO3(-)
Cd(2+) + 2OH(-)= Cd(OH)2
6) CO2 + 2NaOH = Na2CO3 + H2O
CO2 + 2Na(+) + 2OH(-) = 2Na(+) + CO3(2-) + H2O
CO2 + 2OH(-) = CO3(2-) + H2O
CH2=CH2 + CH4 (H2SO4) = CH3-CH2-CH3
C3H8 + Cl2 = CH3-CH(Cl)-CH3 + HCl
2CH3-CH(Cl)-CH3 + 2Na = 2NaCl + (CH3)2CH-CH(CH3)2
(CH3)2CH-CH(CH3)2 + Cl2 = (CH3)2CH-CCl(CH3)2 + HCl
(CH3)2CH-CCl(CH3)2 + CH3Cl + 2Na = (CH3)2CH-C(CH3)3 + 2NaCl
C7H16 + O2 = CO2 + H2O