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Diketahui potensial reduksi standar beberapa unsur sebagai berikut. Ti 2 + / Ti E o Fe 2 + / Fe E o Cr 2 + / Cr E o Cu 2 + / Cu E o ​ = = = = ​ − 1 , 6 volt − 0 , 44 volt − 0 , 91 volt + 0 , 34 volt ​ Diantara reaksi-reaksi redoks berikut ini, yang tidak dapat berlangsung adalah ...

Diketahui potensial reduksi standar beberapa unsur sebagai berikut.

 

Diantara reaksi-reaksi redoks berikut ini, yang tidak dapat berlangsung adalah ...

  1. Ti open parentheses italic s close parentheses space plus space Fe to the power of 2 plus sign left parenthesis italic a italic q right parenthesis space rightwards arrow space Ti to the power of 2 plus sign left parenthesis italic a italic q right parenthesis space plus space Fe open parentheses italic s close parentheses 

  2. Cr open parentheses italic s close parentheses and Cu to the power of 2 plus sign left parenthesis italic a italic q right parenthesis rightwards arrow space Cr to the power of 2 plus sign left parenthesis italic a italic q right parenthesis plus Cu open parentheses italic s close parentheses 

  3. Cu open parentheses italic s close parentheses and Fe to the power of 2 plus sign left parenthesis italic a italic q right parenthesis yields Cu to the power of 2 plus sign left parenthesis italic a italic q right parenthesis plus Fe open parentheses italic s close parentheses 

  4. Fe to the power of 2 plus sign left parenthesis italic a italic q right parenthesis plus Cr open parentheses italic s close parentheses yields Fe open parentheses italic s close parentheses and Cr to the power of 2 plus sign left parenthesis italic a italic q right parenthesis 

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Suatu sel reaksi redoks dapat berlangsung spontan jika : Hitung potensial sel pada setiap opsi Maka reaksi yang tidak dapat berlangsung adalah (C)

Suatu sel reaksi redoks dapat berlangsung spontan jika :

italic E to the power of italic o subscript sel equals italic E to the power of italic o subscript reduksi minus sign italic E to the power of italic o subscript oksidasi italic E to the power of italic o subscript sel greater than 0 

Hitung potensial sel pada setiap opsi

table attributes columnalign right center left columnspacing 0px end attributes row cell A right parenthesis space E to the power of o subscript sel end cell equals cell E to the power of o subscript Fe minus sign E to the power of o subscript Ti end cell row blank equals cell negative sign 0 comma 44 minus sign left parenthesis minus sign 1 comma 6 right parenthesis end cell row blank equals cell plus 1 comma 16 end cell row blank blank blank row cell B right parenthesis space E to the power of o subscript sel end cell equals cell E to the power of o subscript Cu minus sign E to the power of o subscript Cr end cell row blank equals cell plus 0 comma 34 minus sign left parenthesis minus sign 0 comma 91 right parenthesis end cell row blank equals cell plus 1 comma 25 end cell row blank blank blank row cell C right parenthesis space E to the power of o subscript sel end cell equals cell E to the power of o subscript Fe minus sign E to the power of o subscript Cu end cell row blank equals cell negative sign 0 comma 44 minus sign 0 comma 34 end cell row blank equals cell negative sign 0 comma 78 end cell row blank blank blank row cell D right parenthesis space E to the power of o subscript sel end cell equals cell E to the power of o subscript Fe minus sign E to the power of o subscript Cr end cell row blank equals cell negative sign 0 comma 44 minus sign left parenthesis minus sign 0 comma 91 right parenthesis end cell row blank equals cell plus 0 comma 47 end cell row blank blank blank row cell E right parenthesis space E to the power of o subscript sel end cell equals cell E to the power of o subscript Cu minus sign E to the power of o subscript Ti end cell row blank equals cell 0 comma 34 minus sign left parenthesis minus sign 1 comma 6 right parenthesis end cell row blank equals cell 1 comma 94 end cell end table 

Maka reaksi yang tidak dapat berlangsung adalah (C) 

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