Acidic solutions balancing oxidation-reduction reactions

Balancing oxidation-reduction reactions depends on whether the solution is acidic or basic. The method for balancing redox reactions in an acidic solution is as follows ... 

The Composition of Solutions Dilution Acid-Base Titrations Oxidation States Method of Balancing Oxidation-Reduction Reactions... 

Balancing Oxidation-Reduction Reactions in Acidic and Basic Solutions... 

Oxidation—reduction reactions involve a transfer of electrons from one species to another. The half-reaction method can be applied to balancing oxidation-reduction reactions in acidic and basic solutions. Many of the principles required for balancing these reactions were presented in Chapter 4. 

Balancing oxidation-reduction equations for reactions occurring in aqueous acidic solutions is usually fairly straightforward since we can use H20 to balance O, and then H+ to balance H. In basic solution,... 

Most aqueous reaction equations can be balanced by trial and error. Oxidation-reduction reactions require a more systematic approach to balancing equations using either an acidic or basic solution. 

The general procedure is to balance the equations for the half-reactions separately and then to add them to obtain the overall balanced equation. The half-reaction method for balancing oxidation-reduction equations differs slightly depending on whether the reaction takes place in acidic or basic solution. 

Balancing Oxidation-Reduction Equations Occurring in Acidic Solution by the Half-Reaction Method... 

Oxidation-reduction reactions can occur in basic as well as in acidic solutions. The half-reaction method for balancing equations is slightly different in such cases. 

Balance the following oxidation-reduction reactions, which occur in acidic solution, using the half-reaction method. 

For each of the following unbalanced equations, (i) write the half-reactions for oxidation and for reduction, and (ii) balance the overall equation in acidic solution using the half-reaction method. 

It turns out that most oxidation-reduction reactions occur in solutions that are distinctly basic or distinctly acidic. We will cover only the acidic case in this text, because it is the most common. The detailed procedure for balancing the equations for oxidation-reduction reactions that occur in acidic solution is given below, and Example 18.5 illustrates the use of these steps. 

The Half-Reaction Method for Balancing Equations for Oxidation-Reduction Reactions Occurring in Acidic Solution... 

Iodide ion, I , is one of fhe mosf easily oxidized species. Balance each of fhe following oxidation-reduction reactions, which take place in acidic solution, by using the half-reaction method. 

Write complete balanced half-reactions for (a) reduction of nitrate ion to NO in acidic solution, (b) oxidation of HNO2 to NO2 in acidic solution. 

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