Question

Расставить степень окисления и уравнять реакции H2O + O2=H2O+ SO4 MgO + C= Mg + CO2 CuO + CO=Cu + CO2 S + Fe=FeS NIO2 + AL=Ni + AL203

Answer 1

1)Восстановление: O + 2e− = O2− 5 (заряд указываем над 5 со знаком -)Окисление: N3−(тоже заряд, указываем над NO3 с -) 5e− = N2+ 2Итог: 5O + 2N3= 5O2− + 2N2+ 4NH3 + 5O2 = 4NO +6H2O 2) Восстановление: I + 1e− = I− 3Окисление: Al − 3e− = Al3+ 1Итог: 3I + Al = 3I− + Al3+
2Al + 3I2 = 2AlI3
3) Интересная реакция о.о Восстановление: Mg2+ + 2e− = Mg 2 2 1Окисление: C − 2e− = C2+ 2 1Итог: Mg2+ + C = Mg + C2+

 MgO + C (кокс) = Mg + CO 4) Восстановление: NO3− + 4H+ + 3e− = NO + 2H2O 5Окисление: P + 4H2O − 5e− = PO43− + 8H+ 3Итог: 5NO3− + 3P + 2H2O = 5NO + 3PO43− + 4H+ 3P + 5HNO3 (конц.) + 2H2O = 3 HPO4 + 5NO (газ, улетит) 7) Восстановление: SO42− + 4H+ + 2e− = SO2 + 2H2O 2 2 1Окисление: Cu − 2e− = Cu2+ 2 1Итог: SO42− + 4H+ + Cu = SO2 + 2H2O + Cu2
2H2SO4 (конц.) + Cu = CuSO4 + SO2 (газ, улетит) +2H2O
Надеюсь, что система понятна

Answer 2

 подожди я почти сделала  подожди и поставь спасибо

Answer 3

Balancing and Determining Oxidation States of Chemical Reactions

To balance and determine the oxidation states of the given chemical reactions, let's break them down one by one:

1. H2O + O2 = H2O2 - To balance this equation, we need to add a coefficient of 2 in front of H2O2. - The oxidation state of hydrogen (H) in H2O is +1, and in H2O2, it is +1 as well. - The oxidation state of oxygen (O) in O2 is 0, and in H2O2, it is -1.

2. SO4 + MgO = MgSO4 - To balance this equation, we need to add a coefficient of 1 in front of MgSO4. - The oxidation state of sulfur (S) in SO4 is +6, and in MgSO4, it is +6. - The oxidation state of magnesium (Mg) in MgO is +2, and in MgSO4, it is +2. - The oxidation state of oxygen (O) in MgO is -2, and in MgSO4, it is -2.

3. C + MgO = Mg + CO2 - To balance this equation, we need to add a coefficient of 1 in front of MgO and CO2. - The oxidation state of carbon (C) in C is 0, and in CO2, it is +4. - The oxidation state of magnesium (Mg) in MgO is +2, and in Mg, it is +2. - The oxidation state of oxygen (O) in MgO is -2, and in CO2, it is -2.

4. CuO + CO = Cu + CO2 - To balance this equation, we need to add a coefficient of 2 in front of CuO and CO2. - The oxidation state of copper (Cu) in CuO is +2, and in Cu, it is 0. - The oxidation state of carbon (C) in CO is +2, and in CO2, it is +4. - The oxidation state of oxygen (O) in CuO is -2, and in CO2, it is -2.

5. S + Fe = FeS - To balance this equation, we need to add a coefficient of 1 in front of FeS. - The oxidation state of sulfur (S) in S is 0, and in FeS, it is -2. - The oxidation state of iron (Fe) in Fe is 0, and in FeS, it is +2.

6. NiO2 + Al = Ni + Al2O3 - To balance this equation, we need to add a coefficient of 2 in front of Al and Al2O3. - The oxidation state of nickel (Ni) in NiO2 is +4, and in Ni, it is 0. - The oxidation state of aluminum (Al) in Al is 0, and in Al2O3, it is +3. - The oxidation state of oxygen (O) in NiO2 is -2, and in Al2O3, it is -2.

Please note that these are the balanced equations and oxidation states based on the given reactions.