Ответ:
1) 1,5 2) 2,3 3) 3,5
Объяснение:
1) Al2O3 + 2NaOH + 3H2O= 2Na[Al(OH)4]
SeO3 + 2NaOH = Na2SeO4 + H2O
2) 2CrO + 4NO2 + O2 = 2Cr(NO3)2
2CrO + C = 2Cr + CO2
CrO + 2HCl = CrCl2 + H2O
FeO + 2HCl = FeCl2 + H2O
FeO + C = Fe + CO
FeO + 3NO2 + O2 = Fe(NO3)3
3) 2P +3 Cl2 = 2PCl3
Cl2 +2 NaOH = NaCl + NaClO + H2O
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Verified answer
Ответ:
1) 1,5 2) 2,3 3) 3,5
Объяснение:
1) Al2O3 + 2NaOH + 3H2O= 2Na[Al(OH)4]
SeO3 + 2NaOH = Na2SeO4 + H2O
2) 2CrO + 4NO2 + O2 = 2Cr(NO3)2
2CrO + C = 2Cr + CO2
CrO + 2HCl = CrCl2 + H2O
FeO + 2HCl = FeCl2 + H2O
FeO + C = Fe + CO
FeO + 3NO2 + O2 = Fe(NO3)3
3) 2P +3 Cl2 = 2PCl3
Cl2 +2 NaOH = NaCl + NaClO + H2O