0.4-:2rArr

Complete the following ionic equations : MnO_4^(2-)rarr .......+e^(-)

For H_(3)PO_(4) , H_(3)PO_(4) rarr H_(2)PO_(4)^(-)+H^(+)(K_(1)), H_(2)PO_(4)^- rarr HPO_(4)^(-)+H^(+) (K_2), HPO_(4)^(2-) rarr PO_(4)^(3-) + H^(+) (K_(3)) then

Complete the following reactions? C_2H_4+O_2rarr

Complete the following reactions : C_2H_4+O_2 rarr

Balance the following equation by ion electron method : Cr_2O_7^(2-) + H^(+) + C_2O_4^2 rarr + Cr^(3+) CO_2 + H_2O .

Complete and balance the following equation : Fe_3O_4+4H_2 rarr "____"+"____"