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Perhatikan reaksi kesetimbangan berikut. CO(g)+Cl2​(g)⇌COCl2​(g)  Nilai tetapan kesetimbangan Kc​ reaksi di atas sebesar 8.000 pada 500 K. Jika pada kesetimbangan : [CO]=2[Cl2​] dan [CO]=21​[COCl2​]  maka nilai konsentrasi COCl2​ ....

Pertanyaan

Perhatikan reaksi kesetimbangan berikut.

C O open parentheses italic g close parentheses and Cl subscript 2 open parentheses italic g close parentheses equilibrium C O Cl subscript 2 open parentheses italic g close parentheses 

Nilai tetapan kesetimbangan begin mathsize 14px style K subscript c end style reaksi di atas sebesar 8.000 pada 500 K. Jika pada kesetimbangan :

left square bracket CO right square bracket equals 2 left square bracket Cl subscript 2 right square bracket dan left square bracket CO right square bracket equals 1 half left square bracket COCl subscript 2 right square bracket 

maka nilai konsentrasi begin mathsize 14px style C O Cl subscript 2 space end style....begin mathsize 14px style space end style

  1. begin mathsize 14px style 1 comma 0 cross times 10 to the power of negative 4 end exponent space straight M end style

  2. begin mathsize 14px style 2 comma 0 cross times 10 to the power of negative 4 end exponent space straight M end style

  3. begin mathsize 14px style 2 comma 5 cross times 10 to the power of negative 4 end exponent space straight M end style 

  4. undefined 

  5. begin mathsize 14px style 8 comma 0 cross times 10 to the power of negative 4 end exponent space straight M end style 

S. Hidayati

Master Teacher

Mahasiswa/Alumni Universitas Indonesia

Jawaban terverifikasi

Jawaban

konsentrasi undefined 

Pembahasan

Diketahui dari soal :

Reaksi kesetimbangan dilakukan pada suhu 500 K.

C O open parentheses italic g close parentheses and Cl subscript 2 open parentheses italic g close parentheses equilibrium C O Cl subscript 2 open parentheses italic g close parentheses space space space space Kc equals 8.000   

begin mathsize 14px style open square brackets C O close square brackets equals 2 space open square brackets Cl subscript 2 close square brackets open square brackets Cl subscript 2 close square brackets equals 1 half space open square brackets C O close square brackets open square brackets C O close square brackets equals 1 half space open square brackets C O Cl subscript 2 close square brackets   end style  

Ditanya : begin mathsize 14px style open square brackets C O Cl subscript 2 close square brackets end style 

Penyelesaian :

Kesetimbangan kimia dapat berubah sesuai dengan perubahan konsentrasi pada zat-zat yang bereaksi. Dari perubahan konsentrasi diatas nilai Kc adalah tetap sehingga nilai perubahan konsentrasi yang ditanyakan dapat diselesaikan melalui persamaan kesetimbangan berikut :

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell K subscript c end cell equals cell fraction numerator open square brackets C O Cl subscript 2 close square brackets to the power of 1 over denominator open square brackets C O close square brackets to the power of 1. open square brackets Cl subscript 2 close square brackets to the power of 1 end fraction end cell row 8000 equals cell fraction numerator open square brackets C O Cl subscript 2 close square brackets to the power of 1 over denominator open square brackets C O close square brackets to the power of 1. begin display style 1 half end style open square brackets C O close square brackets to the power of 1 end fraction end cell row 8000 equals cell fraction numerator open square brackets C O Cl subscript 2 close square brackets to the power of 1 over denominator begin display style 1 half end style. open square brackets C O close square brackets squared end fraction end cell row 8000 equals cell fraction numerator open square brackets C O Cl subscript 2 close square brackets to the power of 1 over denominator begin display style 1 half. open square brackets 1 half point C O Cl subscript 2 close square brackets squared end style end fraction end cell row 8000 equals cell fraction numerator open square brackets C O Cl subscript 2 close square brackets to the power of 1 over denominator begin display style 1 half.1 fourth open square brackets C O Cl subscript 2 close square brackets squared end style end fraction end cell row 8000 equals cell fraction numerator 1 over denominator begin display style 1 over 8. open square brackets C O Cl subscript 2 close square brackets to the power of 1 end style end fraction end cell row cell open square brackets C O Cl subscript 2 close square brackets end cell equals cell fraction numerator 1 over denominator begin display style 1 over 8.8000 end style end fraction end cell row cell open square brackets C O Cl subscript 2 close square brackets end cell equals cell fraction numerator 1 over denominator begin display style 1000 end style end fraction end cell row cell open square brackets C O Cl subscript 2 close square brackets end cell equals cell 10 to the power of negative sign 3 space end exponent M end cell row blank blank blank row blank blank blank end table end style 

Dengan demikian konsentrasi undefined 

969

5.0 (3 rating)

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