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Anonymous users2024-02-05Is it possible that 2-valent iron was oxidized first?
FeCl3 iron is formed after heating FeCl3 solution.
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Anonymous users2024-02-04Chemical equation: 2FeCl2 + Cl2 = 2FeCl3
Ion equation: 2Fe2+ +Cl2=2Fe3+ +2Cl-
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Anonymous users2024-02-03Chemical equation: 2FeCl2 + Cl2 = 2FeCl3
Ion equation: 2Fe2+ +Cl2=2Fe3+ +2Cl-
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Anonymous users2024-02-02Chemical equation: 2FeCl2 + Cl2 = 2FeCl3
Ion equation: 2Fe2+ +Cl2=2Fe3+ +2Cl-
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Anonymous users2024-02-01Reducibility I->Fe2+ >I2
A small amount of Cl2 only oxidizes I-:
A small amount of Cl2: Cl2 +FEI2 ==FeCl2 + I2 Cl2 +2I- ==I2 +2Cl-
Sufficient amount of Cl2 (let not oxidize i2): 3Cl2 +2FE2 ==2FeCl3 +2I2 3Cl2 +2Fe2+ +4I-==2Fe3+ +6Cl- +2I2
If there is still Cl2 and remaining I2, it will also be oxidized:
5cl2 +i2 +6h2o ==10hcl + 2hio3 5cl2+i2+6h2o==12h+ +10cl-+ 2io3-
The total response is:
13cl2 + 2fei2 +12h2o ==2fecl3 +20hcl +4hio3
13cl2 +2fe2+ 4i- +12h2o==2fe3+ +26cl- +24h+ +4io3-
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Anonymous users2024-01-31A small amount of Cl2 is passed into a sufficient amount of Fe2 solution, Fe2+Cl2=FeCl2+I22I- +Cl2=I2+2Cl-
A sufficient amount of Cl2 is passed into a small amount of FEI2 solution, 2FE2+3Cl2=2FeCl3+2I2
2fe2+ +4i- +3cl2=2fe3+ +6cl- +2i2
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Anonymous users2024-01-30A small amount of Cl2 is passed into a sufficient amount of Fe2 solution, 2i- +Cl2=2Cl- +i2 and a sufficient amount of Cl2 is passed into a small amount of Fe2 solution 2Fe2+ +4i- +3Cl2=2Fe3+ +6Cl- +2I2
For this question, the exam generally only tests ion equations.
i- has strong reducing properties, cl2 has strong oxidizing properties, and i- is oxidized by cl2 to generate i2
Cl2 is reduced by I-to form Cl- - This is the reaction when Cl2 is insufficient, and when Cl2 is sufficient, the FeCl2 generated by the previous step will continue to react with Cl2, that is, 2FeCl2+Cl2=2FeCl3, that is, Fe+2 is oxidized by Cl2 to Fe+3, and the two equations of FE2+Cl2=FeCl2+I2 and 2FeCl2+Cl2=2FeCl3 are combined to obtain the equation 2FEI2+3Cl2=2FeCl3+2i2 (sufficient).
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Anonymous users2024-01-29FeCl3 solution is converted into FeCl2 solution: excessive iron filings are added to FeCl3 solution, and the excess iron can be removed by complete filtration of the reaction, and the reaction equation is 2FeCl3 + Fe (excess) = 3FeCl2;
Conversion of FeCl2 to FeCl3: A large amount of Cl2 can be introduced into the FeCl2 solution, and the reaction equation is 2FeCl2 + Cl2 = 2FeCl3
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Anonymous users2024-01-28The solution contains FeCl2 and is removed by introducing excess Cl2Traces and programs.
is 2FeCl2 + Cl2 ==2FeCl3
The solution contains FeCl3, and the method of removing it is to add excess iron powder and stare at the filter pants to know it.
The equation is: 2FeCl3 + Fe ==3FeCl2
Third-party energy conservation companies or energy conservation audit companies.
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