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What is ion electron method.....??? |
| Answer» \tWrite the skeletal equation and indicate the oxidation number of all the elements which occur in skeletal equation\tFind out the species that are oxidized and reduced.\tSplit the skeletal equation into two half reactions: oxidation half reaction and reduction half reaction\tBalance the two-half equation separately by rules described below:\tIn each half reaction first balance the atoms of element that has undergone a change in oxidation number.\tAdd electrons to whatever side is necessary to make up the difference in oxidation number in each half reaction.\tBalance the charge by adding H+\xa0ions, if the reaction occurs in acidic medium .For basic medium, add OH-\xa0ions if the reaction occurs in basic medium.\tBalance oxygen atoms by adding required number of water molecules to the side deficient in oxygen atoms\tIn the acidic medium, H atoms are balanced by adding H\xa0+\xa0ions to the side deficient in H atoms.\tHowever, in the basic medium H atoms are balanced by adding water molecules equal to number to H atoms deficient.\tAdd equal number of OH-\xa0ions to opposite side of equation.\tThe two half reactions are then multiplied by suitable integers .so that the total number of electrons gained in half reaction becomes equal to total number of electrons lost in another half reaction.\tThen the two half reactions are added up.\tTo verify the balancing, check whether the total charge on either is equal or not. | |