탄산철(FeCO3)의 용해도곱. Ksp

탄산철(FeCO3)의 용해도곱. Ksp

 

 

탄산철(FeCO3)의 용해도곱

FeCO3(s) + 2e^- ⇌ Fe(s) + CO3^2- ... E° = –0.756 V

Fe^2+ + 2e^- ⇌ Fe(s) ... E° = –0.440 V

 

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FeCO3(s) ⇌ Fe^2+(aq) + CO3^2-(aq)

 

 

 

.. FeCO3(s) + 2e^- ⇌ Fe(s) + CO3^2-(aq) ... E° = –0.756 V

+) Fe(s) ⇌ Fe^2+(aq) + 2e^- ... E° = +0.440 V

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.. FeCO3(s) ⇌ Fe^2+(aq) + CO3^2-(aq) ... E° = ? V

 

 

 

? = (–0.756) + (+0.440) = –0.316 V

 

 

 

> n = 2

> E° = –0.316 V

 

 

 

E° = 0.0592/n logK

( 참고 https://ywpop.tistory.com/6519 )

 

logK = E° × n/0.0592

 

K = 10^[E° × n/0.0592]

= 10^[(–0.316) × (2) / 0.0592]

= 2.11×10^(-11)

 

 

 

답: 2×10^(-11)

 

 

 

 

[키워드] FeCO3의 Ksp 기준문서