Pertanyaan

Dari percobaan pengukuran laju reaksi diperoleh data sebagai berikut. Dari data tersebut, dapat disimpulkan bahwa orde reaksi totalnya adalah . . .

Dari percobaan pengukuran laju reaksi diperoleh data sebagai berikut.

Dari data tersebut, dapat disimpulkan bahwa orde reaksi totalnya adalah . . .

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Jawaban terverifikasi

Pembahasan

Rumus laju reaksi: Menghitung orde reaksi terhadap A Menghitung orde reaksi terhadap B Orde reaksi total Berdasarkan perhitungan di atas, pilihan jawaban yang paling tepat adalah C.

Rumus laju reaksi:

Menghitung orde reaksi terhadap A

$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell v subscript 2 over v subscript 3 end cell equals cell fraction numerator k open square brackets A close square brackets subscript 2 superscript m open square brackets B close square brackets subscript 2 superscript n over denominator k open square brackets A close square brackets subscript 3 superscript m open square brackets B close square brackets subscript 3 superscript n end fraction end cell row cell fraction numerator begin display style bevelled 1 over t subscript 2 end style over denominator begin display style bevelled 1 over t subscript 3 end style end fraction end cell equals cell fraction numerator k open square brackets A close square brackets subscript 2 superscript m open square brackets B close square brackets subscript 2 superscript n over denominator k open square brackets A close square brackets subscript 3 superscript m open square brackets B close square brackets subscript 3 superscript n end fraction end cell row cell fraction numerator begin display style bevelled 1 fourth end style over denominator begin display style bevelled 1 fourth end style end fraction end cell equals cell fraction numerator k open square brackets 0 comma 1 close square brackets to the power of m open square brackets 0 comma 3 close square brackets to the power of n over denominator k open square brackets 0 comma 2 close square brackets to the power of m open square brackets 0 comma 3 close square brackets to the power of n end fraction end cell row 1 equals cell open square brackets 1 half close square brackets to the power of m end cell row 1 equals cell open square brackets 1 half close square brackets to the power of 0 end cell row italic m bold equals bold 0 end table end style$

Menghitung orde reaksi terhadap B

$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell v subscript 1 over v subscript 2 end cell equals cell fraction numerator k open square brackets A close square brackets subscript 1 superscript m open square brackets B close square brackets subscript 1 superscript n over denominator k open square brackets A close square brackets subscript 2 superscript m open square brackets B close square brackets subscript 2 superscript n end fraction end cell row cell fraction numerator begin display style bevelled 1 over t subscript 1 end style over denominator begin display style bevelled 1 over t subscript 2 end style end fraction end cell equals cell fraction numerator k open square brackets A close square brackets subscript 1 superscript m open square brackets B close square brackets subscript 1 superscript n over denominator k open square brackets A close square brackets subscript 2 superscript m open square brackets B close square brackets subscript 2 superscript n end fraction end cell row cell fraction numerator begin display style bevelled 1 over 36 end style over denominator begin display style bevelled 1 fourth end style end fraction end cell equals cell fraction numerator k open square brackets 0 comma 1 close square brackets to the power of m open square brackets 0 comma 1 close square brackets to the power of n over denominator k open square brackets 0 comma 1 close square brackets to the power of m open square brackets 0 comma 3 close square brackets to the power of n end fraction end cell row cell 4 over 36 end cell equals cell open square brackets 1 third close square brackets to the power of n end cell row cell 1 over 9 end cell equals cell open square brackets 1 third close square brackets to the power of n end cell row cell open square brackets 1 third close square brackets squared end cell equals cell open square brackets 1 third close square brackets to the power of n end cell row italic n bold equals bold 2 row blank blank blank row blank blank blank row blank blank blank row blank blank blank end table end style$

Orde reaksi total

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell Orde space reaksi space total space end cell equals cell m and n end cell row cell Orde space reaksi space total end cell equals cell 0 plus 2 end cell row cell bold Orde bold space bold reaksi bold space bold total end cell bold equals bold 2 end table end style

Berdasarkan perhitungan di atas, pilihan jawaban yang paling tepat adalah C.

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