How many moles of electrons are involved in the conversion of 1 mole of Cr_(7)O_(7)^(2-) ions to Cr^(3+) ions?

How many moles of electrons are involved in the conversion of 1 mole o

1.	How many moles of electrons are involved in the conversion of 1 mole of Cr_(7)O_(7)^(2-) ions to Cr^(3+) ions?
Answer» Solution :The balanced equation is `Cr_(2)O_(7)^(2-)+14H^(+)+6e^(-)rarr2Cr^(3+)+7H_(2)O` THUS 6 moles of ELECTRONS are needed in the abvoe conversion