6-Redox-Cobre y Vitamina C

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Description

2Cu2+ + 4I-

-12

Cu2+/Cu+(+0.15V)e I /2I- (+0.54V)

Cu /Cu1 2+

Cu+2

+

I /2I-.

CuI

I /2IH+

Cu2+/Cu+

Na S O .5H O

M Tiosulfato

Masa CuSO

Masa K 2Cr2O7 ( g ) 6 0.2942 Vol. VlnTiosulfato(mL)

O = Vol. VlnTiosultafo × MTiosultafo

M I2

Vln Vol.tiosulfato M tiosulfato 2 Vln Vol. I 2

Masa de vitamina C = Vol. VlnI2 × MI2 × 0.1761 × f

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