(1) From the half-reaction formulas ① and ②, express the ionic
equation of the redox reaction.
→ Eliminate e− from the equations
① and ② and combine them into one equation.
(2) Find the oxidation numbers of chromium(Cr) and oxygen(O) of
red letters.
1 From The Half Reaction Formulas And Express The Ionic Equation Of The Redox Reaction Eliminate E From The E 1 (202 Bytes) Viewed 62 times
1 From The Half Reaction Formulas And Express The Ionic Equation Of The Redox Reaction Eliminate E From The E 2 (182 Bytes) Viewed 62 times
Note： Cr2O72− ,
H2O2, O2 have two Cr atoms and two
O atoms in the chemical formula, so calculate the oxidation number
per atom.
Cr2
Cr3+
02
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