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Diketahui ​​Eo​:  Zn2+ ∣ ZnFe2− ∣ FePb2+ ∣ PbCu2+ ∣ CuAg2+ ∣ Ag​=====​−0,76 V−0,44 V−0,13 V+0,34 V+0,80 V​  Diagram sel yang berlangsung spontan adalah ...

Pertanyaan

Diketahui table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell italic E to the power of italic o end cell end table

table attributes columnalign right center left columnspacing 0px end attributes row cell Zn to the power of 2 plus space end exponent left enclose space Zn end enclose end cell equals cell negative 0 comma 76 space straight V end cell row cell Fe to the power of 2 minus space end exponent left enclose space Fe end enclose end cell equals cell negative 0 comma 44 space straight V end cell row cell Pb to the power of 2 plus end exponent space left enclose space Pb end enclose end cell equals cell negative 0 comma 13 space straight V end cell row cell Cu to the power of 2 plus end exponent space left enclose space Cu end enclose end cell equals cell plus 0 comma 34 space straight V end cell row cell Ag to the power of 2 plus end exponent space left enclose space Ag end enclose end cell equals cell plus 0 comma 80 space straight V end cell end table 

Diagram sel yang berlangsung spontan adalah ...space 

  1. Cu space left enclose space Cu to the power of 2 plus end exponent space parallel to space Zn to the power of 2 plus end exponent space end enclose left enclose space Zn end enclose 

  2. Ag space left enclose space Ag to the power of plus space parallel to space Fe to the power of 2 plus end exponent space end enclose left enclose space Fe end enclose 

  3. Ag space left enclose space Ag to the power of 2 plus end exponent space parallel to space Zn to the power of 2 plus end exponent space end enclose left enclose space Zn end enclose 

  4. Pb space left enclose space Pb to the power of 2 minus end exponent space parallel to space Cu to the power of 2 minus end exponent space end enclose left enclose space Cu end enclose 

  5. Pb space left enclose space Pb to the power of 2 plus end exponent parallel to space Zn to the power of 2 minus end exponent space end enclose left enclose space Zn end enclose 

A. Chandra

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

Jawaban terverifikasi

Jawaban

jawaban yang benar adalah D.space 

Pembahasan

Reaksi yang berlangsung spontan, jika italic E degree sel equals plus (positif). Cara mencari italic E degree sel dengan rumus:

italic E degree sel equals italic E degree katode minus sign italic E degree anode italic E degree sel equals italic E degree reduksi minus sign italic E degree oksidasi  

Diagram sel:

oksidasi parallel to space reduksi 

Menentukan nilai italic E degree sel:

A. Cu space left enclose space Cu to the power of 2 plus end exponent space parallel to space Zn to the power of 2 plus end exponent space end enclose left enclose space Zn end enclose

table attributes columnalign right center left columnspacing 0px end attributes row cell italic E degree sel end cell equals cell italic E degree Zn minus sign italic E degree Cu end cell row blank equals cell negative sign 0 comma 76 minus sign 0 comma 34 end cell row blank equals cell negative sign 1 comma 1 space V end cell end table 

B. Ag space left enclose space Ag to the power of plus space parallel to space Fe to the power of 2 plus end exponent space end enclose left enclose space Fe end enclose

table attributes columnalign right center left columnspacing 0px end attributes row cell italic E degree sel end cell equals cell italic E degree Fe minus sign italic E degree Ag end cell row blank equals cell negative sign 0 comma 44 minus sign 0 comma 80 end cell row blank equals cell negative sign 1 comma 24 space V end cell end table 

C. Ag space left enclose space Ag to the power of 2 plus end exponent space parallel to space Zn to the power of 2 plus end exponent space end enclose left enclose space Zn end enclose

table attributes columnalign right center left columnspacing 0px end attributes row cell italic E degree sel end cell equals cell italic E degree Zn minus sign italic E degree Ag end cell row blank equals cell negative sign 0 comma 76 minus sign 0 comma 80 end cell row blank equals cell negative sign 1 comma 56 space V end cell end table 

D. Pb space left enclose space Pb to the power of 2 minus end exponent space parallel to space Cu to the power of 2 minus end exponent space end enclose left enclose space Cu end enclose

table attributes columnalign right center left columnspacing 0px end attributes row cell italic E degree sel end cell equals cell italic E degree Cu minus sign italic E degree Pb end cell row blank equals cell 0 comma 34 minus sign left parenthesis minus sign 0 comma 13 right parenthesis end cell row blank equals cell 0 comma 47 space V end cell end table 

E. Pb space left enclose space Pb to the power of 2 plus end exponent parallel to space Zn to the power of 2 minus end exponent space end enclose left enclose space Zn end enclose

table attributes columnalign right center left columnspacing 0px end attributes row cell italic E degree sel end cell equals cell italic E degree Zn minus sign italic E degree Pb end cell row blank equals cell negative sign 0 comma 76 minus sign left parenthesis minus sign 0 comma 13 right parenthesis end cell row blank equals cell negative sign 0 comma 63 space V end cell end table 

Oleh karena itu, diagram sel yang berlangsung spontan adalah Pb space left enclose space Pb to the power of 2 minus end exponent space parallel to space Cu to the power of 2 minus end exponent space end enclose left enclose space Cu end enclose.

Jadi, jawaban yang benar adalah D.space 

60

1.0 (2 rating)

Radhiyatul

Jawaban tidak sesuai

Keisya Febya

Pembahasan tidak lengkap

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