Написать овр. tio+h2so4=ti2(so4)3+h2+h2o hclo3=hclo4+h2o+clo2 - вопрос №2424322342222742234708902 от elizavetawwwpotex 30.05.2022 20:50

Question

Химия: Написать овр. tio+h2so4=ti2(so4)3+h2+h2o hclo3=hclo4+h2o+clo2 k2cr2o7+(nh4)2s+h2o=cr(oh)3+s+h3n+koh

elizavetawwwpotex · Answer

1) 2TiO + 3H2SO4 = Ti2(SO4)3 + H2 + 2H2O:

2Ti+2 -2e- = 2Ti3+ | 2 | 2 | 1 |

2H+ +2e- = H2    | 2 |    | 1 |;

2) 3HClO3 = HClO4 + H2O + 2ClO2:

Cl+5 -2e- = Cl+7 | 2 | 2 | 1 |

Cl+5 +e- = Cl+4    | 1 |    | 2 |;

3) K2Cr2O7 + 3(NH4)2S + H2O = 2Cr(OH)3 + 3S + 6NH3 + 2KOH:

2Cr+6 +6e- = 2Cr+3 | 6 | 6 | 1 |

S-2 -2e- = S    | 2 |    | 3 |.