题目内容

E(Cl2/Cl–) = 1.36 V, E(I2/I–) = 0.535 V, E(Fe3+/Fe2+) = 0.769 V. In the standard state, the correct order of oxidation capacity is

A. Cl2 > I2 > Fe3+
B. Cl2 > Fe3+ > I2
C. Cl2 > Fe2+ > I2
D. I2 > Fe3+ > Cl2

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更多问题

Which of the following substances can reduce the electrode potential of Fe2+/ Fe?

A. NaOH
B. HCl
C. FeCl3
D. None of them

Which of the following substances cannot be used as a reference substance?

A. Na2B4O7·10H2O
B. Na2CO3
C. KOH
D. H2C2O4·2H2O

If the NaOH solution is not used for a long time, the concentration will change, so it should be re-calibrated before use.

Only results with high accuracy and high precision at the same time are reliable.