redox reactions
Redox reactions, or oxidation-reduction reactions, primarily involve the transfer of electrons between two chemical species. The compound that loses an electron is oxidized, the one that gains an electron is reduced. There are also specific terms that describe the specific chemical species. A compound that is oxidized is referred to as a reducing agent, while a compound that is reduced is referred to as the oxidizing agent.
We're all pretty familiar with the chemical reaction of rusting...
iron + water + air = rust
Fe + H2O + O2 → Fe2O3
Well let’s examine the oxidation and reduction reactions that are involved in the redox reaction of rusting. When iron is in the presence of moisture (H2O) it will lose electrons, becoming a positively charged ion in water:Oxidation reaction: Iron is oxidized (loses e-)
Fe(s) → Fe2(aq) + 2 e-
Those electrons are then used to reduce the oxygen dissolved in the water
Reduction reaction: Oxygen is reduced (gains e-)
O2 + 4e- + 4 H →2H2O
iron + water + air = rust
Fe + H2O + O2 → Fe2O3
Well let’s examine the oxidation and reduction reactions that are involved in the redox reaction of rusting. When iron is in the presence of moisture (H2O) it will lose electrons, becoming a positively charged ion in water:Oxidation reaction: Iron is oxidized (loses e-)
Fe(s) → Fe2(aq) + 2 e-
Those electrons are then used to reduce the oxygen dissolved in the water
Reduction reaction: Oxygen is reduced (gains e-)
O2 + 4e- + 4 H →2H2O
NH4+1 Nitrogen will have an oxidation number of -3
I2 Iodide will have an oxidation number of 0 since it's alone
NaNO2 Nitrogen will have an oxidation number of -3
I2 Iodide will have an oxidation number of 0 since it's alone
NaNO2 Nitrogen will have an oxidation number of -3
1 C10H8 + 7 O2 → 5 CO2 + 4 H2O this is a redox reaction; Oxygen is reduced from 0 to -2 and carbon is oxidized.
2 Rb + 3 F2 → 2 RbF this is a redox reaction, Fluorine is reduced from 0 to -1 and Rubidium is oxidized.
2 Rb + 3 F2 → 2 RbF this is a redox reaction, Fluorine is reduced from 0 to -1 and Rubidium is oxidized.