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Pasangan senyawa/ion yang mempunyai atom krom dengan bilangan oksidasi sama yaitu ....

Pasangan senyawa/ion yang mempunyai atom krom dengan bilangan oksidasi sama yaitu ....

  1. begin mathsize 14px style Cr open parentheses O H close parentheses subscript 4 to the power of negative sign end exponent end style dan begin mathsize 14px style Cr O subscript 3 end style 

  2. begin mathsize 14px style K subscript 2 Cr O subscript 4 end style dan begin mathsize 14px style Cr O subscript 3 end style 

  3. begin mathsize 14px style K subscript 2 Cr subscript 2 O subscript 7 end style dan begin mathsize 14px style Cr subscript 2 O subscript 3 end style 

  4. begin mathsize 14px style K subscript 2 Cr O subscript 4 end style dan begin mathsize 14px style Cr open parentheses O H close parentheses subscript 4 to the power of negative sign end exponent end style 

  5. begin mathsize 14px style K subscript 2 Cr subscript 2 O subscript 7 end style dan begin mathsize 14px style Cr open parentheses O H close parentheses subscript 4 to the power of negative sign end exponent end style 

Jawaban:

Ada 5 senyawa yang terdapat pada pilihan jawaban, yaitu begin mathsize 14px style Cr open parentheses O H close parentheses subscript 4 to the power of negative sign end exponent end stylebegin mathsize 14px style Cr O subscript 3 end stylebegin mathsize 14px style K subscript 2 Cr O subscript 4 end stylebegin mathsize 14px style Cr subscript 2 O subscript 3 end style, dan begin mathsize 14px style K subscript 2 Cr subscript 2 O subscript 7 end style. Bilangan oksidasi unsur Cr dalam tiap senyawa tersebut dapat ditentukan sebagai berikut.

begin mathsize 14px style Cr open parentheses O H close parentheses subscript 4 to the power of negative sign end exponent end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell Jumlah space biloks space Cr open parentheses O H close parentheses subscript 4 end cell equals cell negative sign 1 end cell row cell Cr plus 4 cross times left parenthesis O and H right parenthesis end cell equals cell negative sign 1 end cell row cell Cr plus 4 cross times left parenthesis minus sign 2 plus 1 right parenthesis end cell equals cell negative sign 1 end cell row cell Cr plus 4 cross times left parenthesis minus sign 1 right parenthesis end cell equals cell negative sign 1 end cell row cell Cr minus sign 4 end cell equals cell negative sign 1 end cell row Cr equals cell plus 3 end cell end table end style 

begin mathsize 14px style Cr O subscript 3 end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell Jumlah space biloks space Cr O subscript 3 end cell equals 0 row cell Cr plus 3 cross times O end cell equals 0 row cell Cr plus 3 cross times left parenthesis minus sign 2 right parenthesis end cell equals 0 row cell Cr minus sign 6 end cell equals 0 row Cr equals cell plus 6 end cell end table end style 

begin mathsize 14px style K subscript 2 Cr O subscript 4 end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell Jumlah space biloks space K subscript 2 Cr O subscript 4 end cell equals 0 row cell 2 cross times K and Cr plus 4 cross times O end cell equals 0 row cell 2 cross times left parenthesis plus 1 right parenthesis plus Cr plus 4 cross times left parenthesis minus sign 2 right parenthesis end cell equals 0 row cell plus 2 plus Cr minus sign 8 end cell equals 0 row Cr equals cell plus 6 end cell end table end style 

begin mathsize 14px style Cr subscript 2 O subscript 3 end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell Jumlah space biloks space Cr subscript 2 O subscript 3 end cell equals 0 row cell 2 cross times Cr plus 3 cross times O end cell equals 0 row cell 2 cross times Cr plus 3 cross times left parenthesis minus sign 2 right parenthesis end cell equals 0 row cell 2 Cr minus sign 6 end cell equals 0 row cell 2 Cr end cell equals cell plus 6 end cell row Cr equals cell plus 3 end cell end table end style 

begin mathsize 14px style K subscript 2 Cr subscript 2 O subscript 7 end style 
begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell Jumlah space biloks space K subscript 2 Cr subscript 2 O subscript 7 end cell equals 0 row cell 2 cross times K plus 2 cross times Cr plus 7 cross times O end cell equals 0 row cell 2 cross times left parenthesis plus 1 right parenthesis plus 2 cross times Cr plus 7 cross times left parenthesis minus sign 2 right parenthesis end cell equals 0 row cell plus 2 plus 2 Cr minus sign 14 end cell equals 0 row cell 2 Cr end cell equals cell plus 12 end cell row Cr equals cell plus 6 end cell end table end style 

Pasangan senyawa pada pilihan jawaban tidak ada yang atom Cr nya memiliki bilangan oksidasi yang sama.

Jadi, tidak ada jawaban yang benar di pilihan jawaban.

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