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Pada percobaan reaksi A + B → A B diperoleh data-data percobaan sebagai berikut. Tentukan: besarnya laju reaksi bila [A] dan [B] sebesar 0,5 M

Pada percobaan reaksi  diperoleh data-data percobaan sebagai berikut.

 

Tentukan: besarnya laju reaksi bila [A] dan [B] sebesar 0,5 M

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I. Solichah

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Jawaban terverifikasi

Jawaban

besar laju reaksinya (v) adalah 200 M/s

besar laju reaksinya (v) adalah 200 M/s

Pembahasan

Pembahasan
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Persamaan laju reaksi adalahhubungan antara konsentrasi pereaksi dengan laju reaksi. Cari nilai x dari persamaan laju reaksi 2 dan 3 Persamaan laju reaksi secara umum : Cari nilai x dari persamaan laju reaksi 1 dan 2 Cari nilai k dari persamaan laju reaksi 1 Buat persamaan laju reaksi Masukkan konsentrasi bila dan sebesar 0,5 M Persamaan lajunya reaksinya adalah Jadi, besar laju reaksinya (v) adalah 200 M/s

Persamaan laju reaksi adalah hubungan antara konsentrasi pereaksi dengan laju reaksi.

  • Cari nilai x dari persamaan laju reaksi 2 dan 3

Persamaan laju reaksi secara umum : 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 space

table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell Persamaan space laju space reaksi space 2 space colon end cell row 32 equals cell k open square brackets 0 comma 2 close square brackets to the power of x open square brackets 0 comma 2 close square brackets to the power of y space end cell row blank blank blank row blank blank cell Persamaan space laju space reaksi space 3 space colon end cell row 16 equals cell k open square brackets 0 comma 1 close square brackets to the power of x open square brackets 0 comma 2 close square brackets to the power of y space end cell row blank blank blank row cell 32 over 16 end cell equals cell fraction numerator k open square brackets 0 comma 2 close square brackets to the power of x open square brackets 0 comma 2 close square brackets to the power of y over denominator k open square brackets 0 comma 1 close square brackets to the power of x open square brackets 0 comma 2 close square brackets to the power of y end fraction end cell row 2 equals cell open square brackets 0 comma 2 close square brackets to the power of x over open square brackets 0 comma 1 close square brackets to the power of x end cell row cell 2 to the power of 1 end cell equals cell 2 to the power of x end cell row 1 equals cell x space end cell end table

  • Cari nilai x dari persamaan laju reaksi 1 dan 2

 table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell Persamaan space laju space reaksi space 1 space colon end cell row 8 equals cell k open square brackets 0 comma 1 close square brackets to the power of x open square brackets 0 comma 1 close square brackets to the power of y space end cell row blank blank blank row blank blank cell Persamaan space laju space reaksi space 2 space colon end cell row 16 equals cell k open square brackets 0 comma 1 close square brackets to the power of x open square brackets 0 comma 2 close square brackets to the power of y space end cell row blank blank blank row cell 16 over 8 end cell equals cell fraction numerator k open square brackets 0 comma 1 close square brackets to the power of x open square brackets 0 comma 2 close square brackets to the power of y over denominator k open square brackets 0 comma 1 close square brackets to the power of x open square brackets 0 comma 1 close square brackets to the power of y space end fraction end cell row 2 equals cell fraction numerator open square brackets 0 comma 2 close square brackets to the power of y over denominator open square brackets 0 comma 1 close square brackets y end fraction end cell row cell 2 to the power of 1 end cell equals cell 2 to the power of y end cell row 1 equals cell y space space end cell end table

  • Cari nilai k dari persamaan laju reaksi 1

table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell Persamaan space laju space reaksi space 1 space colon end cell row 8 equals cell k open square brackets 0 comma 1 close square brackets to the power of x open square brackets 0 comma 1 close square brackets to the power of y space end cell row 8 equals cell k open square brackets 0 comma 1 close square brackets open square brackets 0 comma 1 close square brackets end cell row cell fraction numerator 8 over denominator open square brackets 0 comma 1 close square brackets open square brackets 0 comma 1 close square brackets end fraction end cell equals k row 800 equals cell k space end cell end table

  • Buat persamaan laju reaksi

table attributes columnalign right center left columnspacing 0px end attributes row v equals cell 800 space open square brackets A close square brackets open square brackets B close square brackets space end cell end table

  • Masukkan konsentrasi bila open square brackets A close square brackets spacedan open square brackets B close square brackets spacesebesar 0,5 M

table attributes columnalign right center left columnspacing 0px end attributes row v equals cell 800 space open square brackets A close square brackets open square brackets B close square brackets space end cell row v equals cell 800 open square brackets 0 comma 5 close square brackets open square brackets 0 comma 5 close square brackets end cell row v equals cell 200 space M space detik to the power of negative sign 1 end exponent space end cell end table

Persamaan lajunya reaksinya adalah table attributes columnalign right center left columnspacing 0px end attributes row v equals cell 800 space open square brackets A close square brackets open square brackets B close square brackets space end cell end table 

Jadi, besar laju reaksinya (v) adalah 200 M/s

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