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| 1. |
Define redox reaction? |
| Answer» The reaction in which reduction and oxidation occurs simultaneously are called redox reaction<br>The reaction which consist of both oxidation and reduction is known as redox reaction. Hear red means reduction and ox means oxidation, so combination of reduction and oxidation is called redox reaction.<br>It is the chemical reaction in which both increase and decrease in oxidation state or number take place.<br>It is a combination of reduction and oxidationRedox = reduction and oxidation<br>There are two types of Redox reactions\tDirect Redox reaction\tIndirect Redox reactionDirect Redox reaction: In which oxidation and reduction both occur in same beaker. In this electron so produced does not travel to large distance.For example: A beaker containing Zinc rod dipped in Copper sulphate solution in this the following reaction occur:Zn + CuSO4 --> ZnSO4 + CuZinc CopperSulphate Zinc Sulphate CopperIn this zinc being more reactive displaces copper from copper sulphate and forms zinc sulphate and copper.Indirect Redox reactions: In it oxidation and reduction occur in different beakers. The electron so produced has to travel a certain distance that leads to generation of current.Example: Daniel cell: A cell containing Zn-Cu couple that we are going to study in detail now as given below but before that let us make you familiar with the general term used in redox reaction that is Redox couple.<br>Reaction in which oxidation and reduction takes place simultaneously | |