The TPTZ-Fe reaction in antioxidants tests the ability of various fruits, nuts, and food items to reduce Fe 3+ to Fe 2+ which binds TPTZ (2,4,6-tri(2-pyridyl)-1,3,5-triazine (TPTZ) very tightly with an extinction coefficient equal to 21,600 at 593 nm. The binding of Fe 2+ to this ligand creates a very intense navy blue color and this absorbance can be measured to test the amount of iron reduced.
In the reaction between iron (Fe) and hydrochloric acid (HCl), the Fe reacts with the HCl to form iron chloride (FeCl2) and hydrogen gas (H2). This reaction is a single displacement reaction, where the Fe displaces the hydrogen in the HCl to form the products.
The half-reaction equation representing the reduction of iron (II) ion (Fe^2+) is: Fe^2+ + 2e^- -> Fe
The oxidation half-reaction is: Fe => Fe+3 + 3e-, and the reduction half-reaction is: F2 + 2e- => 2 F-1. For a complete equation, the oxidation half-reaction as written must be multiplied by 2 and added to the reduction half-reaction as written multiplied by 3 to result in an overall reaction of 2 Fe + 3 F2 = 2 FeF3.
In this reaction, Ag^+ is the oxidizing agent. It undergoes reduction by accepting electrons from Fe to form silver metal, while Fe gets oxidized to Fe^3+ in the process.
AgNO3
In the reaction between iron (Fe) and hydrochloric acid (HCl), the Fe reacts with the HCl to form iron chloride (FeCl2) and hydrogen gas (H2). This reaction is a single displacement reaction, where the Fe displaces the hydrogen in the HCl to form the products.
The half-reaction equation representing the reduction of iron (II) ion (Fe^2+) is: Fe^2+ + 2e^- -> Fe
The oxidation half-reaction is: Fe => Fe+3 + 3e-, and the reduction half-reaction is: F2 + 2e- => 2 F-1. For a complete equation, the oxidation half-reaction as written must be multiplied by 2 and added to the reduction half-reaction as written multiplied by 3 to result in an overall reaction of 2 Fe + 3 F2 = 2 FeF3.
The reaction of Al and FeCl3 to form Fe and Al2O3 is a redox reaction, specifically a single replacement reaction where Fe gains electrons (reduction) and Al loses electrons (oxidation). The release of energy indicates that it is an exothermic reaction.
In this reaction, Ag^+ is the oxidizing agent. It undergoes reduction by accepting electrons from Fe to form silver metal, while Fe gets oxidized to Fe^3+ in the process.
AgNO3
A. Fe^2+ ==> Fe^3+ + e- is an oxidation reactionB. Fe^3+ +e- ==> Fe^2+ is a reduction reactionC. Fe(s) ==> Fe(l) is neither an oxidation nor a reduction reaction. It is a phase change.D. Fe + 2e- ==> Fe^2+ is not a possible reaction.
Oxidant half reaction: 2H+ + 2e- --> H2 Reductant half reaction: Fe --> Fe2+ + 2e- Tribune ions: 2Cl- --> 2Cl-
Fe(s) + 2CH3COOH(aq) = Fe(CH3COO)2(aq) + H2(g)
The balanced chemical equation for the reaction of iron (Fe) with copper (Cu) is: Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)
The most usual reaction is Fe + PbSO4 => FeSO4 + Pb. This reaction can be called "displacement", "single displacement", or "electromotive displacement", and in all of the names previously given, "displacement" could be replaced by "replacement".
The reaction of iron (II) nitrate (Fe(NO3)2) with water will result in the formation of iron (II) hydroxide [Fe(OH)2] and nitric acid (HNO3). The overall chemical equation for the reaction is: Fe(NO3)2 + 2H2O → Fe(OH)2 + 2HNO3