A study guide for balancing redox reactions.Full description
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Many reactions of general and organic chemistry.
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A worksheet that helps with balancing redox reaction with answer to help understand
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Mind maps or Concept Maps are acknowledged as scientific & effective learning tool worldwide. They give a snapshot of each chapter, presented in a flow chart that highlights the important concepts ...
Mind maps or Concept Maps are acknowledged as scientific & effective learning tool worldwide. They give a snapshot of each chapter, presented in a flow chart that highlights the important concepts ...
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Mind maps or Concept Maps are acknowledged as scientific & effective learning tool worldwide. They give a snapshot of each chapter, presented in a flow chart that highlights the important co…Full description
Mind maps or Concept Maps are acknowledged as scientific & effective learning tool worldwide. They give a snapshot of each chapter, presented in a flow chart that highlights the important co…Full description
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It is a summary of class 12 chemistry CBSE.Full description
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2013 -14 CBSE sample question blue print chemistry
Redox Reactions Oxidation is always accompanied by reduction.
Oxidation: Loss of electron(s) by any species
Reduction: Gain of electron(s) by any species
Oxidising agent (oxidant): Acceptor of electron(s)
Reducing agent (reductant): Donor of electron(s)
Oxidation number: It denotes the oxidation state of an element in a compound. Rules for the calculation of oxidation state of an element are as follows: The oxidation number of the element in the free or the uncombined state is zero. For the ions composed of only one atom, the oxidation number is equal to the charge on the ion. The algebraic sum of the oxidation number of all the atoms in a compound must be zero. For polyatomic ions, the algebraic sum of the oxidation number of all the atoms in a compound must be equal to the charge on the ion.
Types of redox reactions: Combination reactions Decomposition reaction
Displacement reaction Metal displacement Non-metal displacement Disproportionation reaction → It involves simultaneous oxidation and reduction of an element in one oxidation state. Decomposition of hydrogen peroxide is an example of disproportionation reaction.
Balancing of redox reaction: Oxidation number method: It is based on the change in the oxidation number of reducing agent and the oxidising agent. Half-reaction method (Ion-electron method): The two half-equations are balanced separately and then added together to give a balanced equation.
Redox reactions and electrode processes: Redox couple → Oxidised and reduced form of a substance together taking part in an oxidation or reduction half reaction Electrode potential → Potential associated with each electrode Standard electrode potential → When concentration of each species is unity, pressure is 1 atm, and temperature is 298 K The standard electrode potential Eo of hydrogen electrode is 0.00 Volts. The redox couple with a negative Eo is a stronger reducing agent than the H+ /H2 couple. The redox couple with a positive Eo is a weaker reducing agent than the H+ /H2 couple. Daniell Cell:
