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Pertanyaan

Fadilah memiliki empat logam, yaitu emas, timbal, timah, dan natrium dengan data potensial reduksi standar sebagai berikut. Au 3 + + 3 e − → Au E 0 = + 1 , 42 V Pb 2 + + 2 e − → Pb E 0 = − 0 , 13 V Sn 2 + + 2 e − → Sn E 0 = − 0 , 14 V Na + + e − → Na E 0 = − 2 , 71 V Berdasarkan reaksi di atas, reaksi yang berlangsung tidak spontan dan memiliki E 0 sel terkeciladalah ....

Fadilah memiliki empat logam, yaitu emas, timbal, timah, dan natrium dengan data potensial reduksi standar sebagai berikut.

 

Berdasarkan reaksi di atas, reaksi yang berlangsung tidak spontan dan memiliki  sel terkecil adalah ....

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

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

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

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

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

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Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah C.

jawaban yang tepat adalah C.

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Pembahasan

Opsi A: Opsi B: Opsi C: Opsi D: Opsi E: Reaksi yang berlangsung tidak spontan dan memiliki sel terkeciladalah . 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 minus sign E to the power of 0 subscript oksidasi space end cell row cell E to the power of 0 subscript sel end cell equals cell negative sign 0 comma 13 space V minus sign left parenthesis plus 1 comma 42 space V right parenthesis end cell row cell E to the power of 0 subscript sel end cell equals cell negative sign 1 comma 55 space V space left parenthesis tidak 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 to the power of 0 subscript sel end cell equals cell E to the power of 0 subscript reduksi minus sign E to the power of 0 subscript oksidasi space 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 0 comma 13 space V right parenthesis end cell row cell E to the power of 0 subscript sel end cell equals cell plus 1 comma 55 space V space open parentheses spontan close parentheses 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 minus sign E to the power of 0 subscript oksidasi space end cell row cell E to the power of 0 subscript sel end cell equals cell negative sign 2 comma 71 space V minus sign left parenthesis minus sign 0 comma 13 space V right parenthesis end cell row cell E to the power of 0 subscript sel end cell equals cell negative sign 2 comma 58 space V space left parenthesis tidak 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 minus sign E to the power of 0 subscript oksidasi space 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 plus 4 comma 13 space V space open parentheses spontan close parentheses 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 to the power of 0 subscript sel end cell equals cell E to the power of 0 subscript reduksi minus sign E to the power of 0 subscript oksidasi space 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 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 plus 2 comma 57 space V space open parentheses spontan close parentheses end cell end table end style 

Reaksi yang berlangsung tidak spontan dan memiliki undefined sel terkecil adalah begin mathsize 14px style Pb and Na to the power of plus sign yields Pb to the power of 2 plus sign and Na end style.

Jadi, jawaban yang tepat adalah C.

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