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Berdasarkan data pengamatan reaksi, A + 2 B → C berikut: Hukum laju reaksinya adalah ...

Berdasarkan data pengamatan reaksi,  berikut:
 


 

Hukum laju reaksinya adalah ...space 

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L. Avicenna

Master Teacher

Mahasiswa/Alumni Institut Teknologi Bandung

Jawaban terverifikasi

Pembahasan

Misal laju reaksinya adalah: Pada percobaan 2 dan 3: sama dan berbeda Jadi orde reaksi terhadap adalah 2 Untuk menentukan orde reaksi kita dapat memasukan data ke percobaan 2 dan 3 Jadi orde reaksi terhadap adalah 0. Pada perhitungan di atas kita telah menentukan orde reaksinya maka persamaan laju reaksinya adalah:

Misal laju reaksinya adalah: v double bond k open square brackets A close square brackets to the power of x open square brackets B close square brackets to the power of y 

  • Pada percobaan 2 dan 3: open square brackets B close square brackets sama dan open square brackets A close square brackets berbeda
    table attributes columnalign right center left columnspacing 0px end attributes row cell v subscript 2 over v subscript 3 end cell equals cell fraction numerator k space open square brackets A close square brackets subscript 2 superscript x open square brackets B close square brackets subscript 2 superscript y over denominator k space open square brackets A close square brackets subscript 3 superscript x open square brackets B close square brackets subscript 3 superscript y end fraction end cell row cell fraction numerator 3.600 space mol space L to the power of negative sign 1 end exponent space menit to the power of negative sign 1 end exponent over denominator 14.400 space mol space L to the power of negative sign 1 end exponent space menit to the power of negative sign 1 end exponent end fraction end cell equals cell fraction numerator k space open square brackets 0 comma 40 space mol space L to the power of negative sign 1 end exponent close square brackets subscript 2 superscript x open square brackets 0 comma 30 space mol space L to the power of negative sign 1 end exponent close square brackets subscript 2 superscript y over denominator k space open square brackets 0 comma 80 space mol space L to the power of negative sign 1 end exponent close square brackets subscript 3 superscript x open square brackets 0 comma 30 space mol space L to the power of negative sign 1 end exponent close square brackets subscript 3 superscript y end fraction end cell row cell open parentheses 1 fourth close parentheses end cell equals cell open parentheses 1 half close parentheses to the power of x end cell row cell open parentheses 1 half close parentheses squared end cell equals cell open parentheses 1 half close parentheses to the power of x end cell row x equals 2 end table  
    Jadi orde reaksi terhadap open square brackets A close square brackets adalah 2
  • Untuk menentukan orde reaksi open square brackets B close square brackets kita dapat memasukan data ke percobaan 2 dan 3
    table attributes columnalign right center left columnspacing 0px end attributes row cell v subscript 2 over v subscript 3 end cell equals cell fraction numerator k space open square brackets A close square brackets subscript 2 superscript x open square brackets B close square brackets subscript 2 superscript y over denominator k space open square brackets A close square brackets subscript 3 superscript x open square brackets B close square brackets subscript 3 superscript y end fraction end cell row cell fraction numerator 3.600 space mol space L to the power of negative sign 1 end exponent space menit to the power of negative sign 1 end exponent over denominator 14.400 space mol space L to the power of negative sign 1 end exponent space menit to the power of negative sign 1 end exponent end fraction end cell equals cell fraction numerator k space open square brackets 0 comma 40 space mol space L to the power of negative sign 1 end exponent close square brackets subscript 2 superscript x open square brackets 0 comma 30 space mol space L to the power of negative sign 1 end exponent close square brackets subscript 2 superscript y over denominator k space open square brackets 0 comma 80 space mol space L to the power of negative sign 1 end exponent close square brackets subscript 3 superscript x open square brackets 0 comma 30 space mol space L to the power of negative sign 1 end exponent close square brackets subscript 3 superscript y end fraction end cell row cell open parentheses 1 fourth close parentheses end cell equals cell open parentheses 1 half close parentheses squared open parentheses 1 over 1 close parentheses to the power of y end cell row cell open parentheses 1 half close parentheses squared end cell equals cell open parentheses 1 half close parentheses squared open parentheses 1 over 1 close parentheses to the power of y end cell row y equals 0 end table 
    Jadi orde reaksi terhadap open square brackets B close square brackets adalah 0.

Pada perhitungan di atas kita telah menentukan orde reaksinya maka persamaan laju reaksinya adalah:
italic v bold equals italic k begin bold style left square bracket italic A right square bracket end style to the power of bold 2 begin bold style open square brackets B close square brackets end style to the power of bold 0 space 

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