Roboguru

Pertanyaan

Beberapa data harga potensial reduksi standar (Eo).

Reaksi redoks yang tidak berlangsung spontan adalah..

  1. C u space divided by space C u to the power of blank subscript 2 plus end subscript end exponent space divided by divided by space B r subscript 2 space divided by space 2 space B r to the power of minus

  2. 2 space I to the power of minus space divided by space I subscript 2 space space divided by divided by space F e to the power of 3 plus end exponent space divided by space F e to the power of 2 plus end exponent

  3. 2 space I to the power of minus space divided by space I subscript 2 space space divided by divided by space B r subscript 2 space divided by space 2 space B r to the power of minus

  4. 2 space I to the power of minus space divided by space I subscript 2 space space divided by divided by space C u to the power of 2 plus end exponent space divided by space C u

  5. F e to the power of 2 plus end exponent space divided by space F e to the power of 3 plus end exponent space divided by divided by space B r subscript 2 space divided by space 2 space B r to the power of minus

M. Robo

Master Teacher

Jawaban terverifikasi

Pembahasan

Reaksi tidak berlangsung spontan, artinya reaksi memiliki harga Eo sel negatif.

2I rightwards arrow I2 + 2e                  Eo            = 0,54 volt

Cu+2 + 2e undefined Cu             Eo            = + 0,35 volt  +

2I+ Cu+2  undefined I2 + Cu      Eosel       = – 0,19 volt

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