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Pertanyaan

Perhatikan data potensial reduksi standar berikut! Au 3 + + 3 e − → Au E 0 = + 1 , 42 V Cl 2 ​ + 2 e − → 2 Cl − E 0 = + 1 , 36 V Sn 2 + + 2 e − → Sn E 0 = − 0 , 14 V Na + + e − → Na E 0 = − 2 , 71 V ​ Reaksi berikut yang berlangsung tidak spontan adalah ....

Perhatikan data potensial reduksi standar berikut!

  

Reaksi berikut yang berlangsung tidak spontan adalah ....

  1. begin mathsize 14px style Na and Au to the power of 3 plus sign yields Na to the power of plus sign and Au end style 

  2. begin mathsize 14px style Na and Sn to the power of 2 plus sign yields Na to the power of plus sign and Sn end style 

  3. begin mathsize 14px style Cl to the power of minus sign and Sn to the power of 2 plus sign yields Cl subscript 2 and Sn end style 

  4. begin mathsize 14px style Cl to the power of minus sign and Au to the power of 3 plus sign yields Cl subscript 2 and Au end style 

  5. begin mathsize 14px style Sn and Au to the power of 3 plus sign yields Sn to the power of 2 plus sign and Au end style 

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S. Hidayati

Master Teacher

Mahasiswa/Alumni Universitas Indonesia

Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah C.

jawaban yang tepat adalah C.

Pembahasan

Opsi A: Opsi B: Opsi C: OpsiD: Opsi E: Reaksi yang berlangsung tidak spontan adalah reaksi yang memiliki nilai sel < 0, yaitu . Jadi, jawaban yang tepat adalah C.

Opsi A:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell E to the power of 0 subscript sel end cell equals cell E to the power of 0 subscript reduksi – E to the power of 0 subscript oksidasi end cell row cell E to the power of 0 subscript sel end cell equals cell plus 1 comma 42 space V minus sign left parenthesis minus sign 2 comma 71 space V right parenthesis end cell row cell E to the power of 0 subscript sel end cell equals cell 1 comma 42 space V plus 2 comma 71 space V end cell row cell E to the power of 0 subscript sel end cell equals cell plus 4 comma 13 V space left parenthesis berlangsung space spontan right parenthesis end cell end table end style 


Opsi B:

 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell E blank to the power of 0 blank subscript sel end cell equals cell E to the power of 0 blank subscript reduksi – E to the power of 0 blank subscript oksidasi end cell row cell E to the power of 0 blank subscript sel end cell equals cell negative sign 0 comma 14 space V minus sign left parenthesis minus sign 2 comma 71 space V right parenthesis end cell row cell E to the power of 0 blank subscript sel end cell equals cell negative sign 0 comma 14 space V plus 2 comma 71 space V end cell row cell E to the power of 0 blank subscript sel end cell equals cell plus 2 comma 57 V space left parenthesis berlangsung space spontan right parenthesis end cell end table end style 


Opsi C:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell E to the power of 0 subscript sel end cell equals cell E to the power of 0 subscript reduksi – E to the power of 0 subscript oksidasi end cell row cell E to the power of 0 subscript sel end cell equals cell negative sign 0 comma 14 space V minus sign left parenthesis plus 1 comma 36 space V right parenthesis end cell row cell E to the power of 0 subscript sel end cell equals cell negative sign 1 comma 50 V space left parenthesis tidak space berlangsung space spontan right parenthesis end cell end table end style 


Opsi D:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell E to the power of 0 subscript sel end cell equals cell E to the power of 0 subscript reduksi – E to the power of 0 subscript oksidasi end cell row cell E to the power of 0 subscript sel end cell equals cell plus 1 comma 42 space V minus sign left parenthesis plus 1 comma 36 space V right parenthesis end cell row cell E to the power of 0 subscript sel end cell equals cell plus 0 comma 06 V space left parenthesis berlangsung space spontan right parenthesis end cell end table end style 


Opsi E:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell E blank to the power of 0 blank subscript sel end cell equals cell E to the power of 0 blank subscript reduksi – E to the power of 0 blank subscript oksidasi end cell row cell E to the power of 0 blank subscript sel end cell equals cell plus 1 comma 42 space V minus sign left parenthesis 0 comma 14 space V right parenthesis end cell row cell E to the power of 0 blank subscript sel end cell equals cell plus 1 comma 56 V space left parenthesis berlangsung space spontan right parenthesis end cell end table end style 


Reaksi yang berlangsung tidak spontan adalah reaksi yang memiliki nilai undefined sel < 0, yaitu begin mathsize 14px style Cl to the power of minus sign and Sn to the power of 2 plus sign yields Cl subscript 2 and Sn end style.

Jadi, jawaban yang tepat adalah C.

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Perhatikan data potensial reduksi standar berikut! Au 3 + + 3 e − Cl 2 ​ + 2 e − Sn 2 + + 2 e − Na + + e − ​ → → → → ​ Au E 0 = + 1 , 42 V 2 Cl − E 0 = + 1 , 36 V Sn E 0 = − 0 , 14 V Na E 0 = − 2...

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