Respuesta :

kumaripayalgupta
NaHco3+CH3CooH=CH3CooNa+Co2+H2o
I think its -2  in this compound 

Total of the  oxidation numbers must be 0  
so we have 

Na = +1, h = +1 and C = +4

Calculatiing

1 + 1 + 4 + 3(O) =  0

6 + 3O = 0
so O = -6/3 = -2

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