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Pada suhu 273 oC, gas brom dapat bereaksi dengan gas nitrogen monoksida menurut persamaan reaksi: Dari reaksi tersebut diperoleh data sebagai berikut: Dari data tersebut, tentukan: a. tingkat reaksi (orde reaksi) dari NO dan b. orde reaksi total c. persamaan laju reaksi

Pertanyaan

Pada suhu 273 oC, gas brom dapat bereaksi dengan gas nitrogen monoksida menurut persamaan reaksi:

2 N O subscript 2 open parentheses italic g close parentheses and Br subscript 2 open parentheses italic g close parentheses yields 2 N O Br open parentheses italic g close parentheses

Dari reaksi tersebut diperoleh data sebagai berikut:

Dari data tersebut, tentukan:

a. tingkat reaksi (orde reaksi) dari NO dan Br subscript 2

b. orde reaksi total

c. persamaan laju reaksispace

Pembahasan Soal:

a. tingkat reaksi (orde reaksi) dari NO dan Br subscript 2

- Menghitung orde reaksi dari NO

table attributes columnalign right center left columnspacing 0px end attributes row cell v subscript 1 over v subscript 4 end cell equals cell fraction numerator k open square brackets N O close square brackets to the power of a open square brackets Br close square brackets to the power of b over denominator k open square brackets N O close square brackets to the power of a open square brackets Br close square brackets to the power of b end fraction end cell row cell 6 over 24 end cell equals cell fraction numerator open square brackets 0 comma 1 close square brackets to the power of a open square brackets 0 comma 05 close square brackets to the power of b over denominator open square brackets 0 comma 2 close square brackets to the power of a open square brackets 0 comma 05 close square brackets to the power of b end fraction end cell row cell 1 fourth end cell equals cell open square brackets 1 close square brackets to the power of a over open square brackets 2 close square brackets to the power of a end cell row a equals 2 end table

- Menghitung orde reaksi dari Br subscript 2

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 N O close square brackets to the power of a open square brackets Br close square brackets to the power of b over denominator k open square brackets N O close square brackets to the power of a open square brackets Br close square brackets to the power of b end fraction end cell row cell 12 over 24 end cell equals cell fraction numerator open square brackets 0 comma 1 close square brackets to the power of a open square brackets 0 comma 1 close square brackets to the power of b over denominator open square brackets 0 comma 1 close square brackets to the power of a open square brackets 0 comma 2 close square brackets to the power of b end fraction end cell row cell 1 half end cell equals cell open square brackets 1 close square brackets to the power of b over open square brackets 2 close square brackets to the power of b end cell row b equals 1 end table


b. orde reaksi total

Orde space total double bond a and b Orde space total equals 2 plus 1 Orde space total equals 3


c. persamaan laju reaksi

table attributes columnalign right center left columnspacing 0px end attributes row cell V subscript 1 end cell equals cell k open square brackets N O close square brackets squared open square brackets Br subscript 2 close square brackets end cell row 6 equals cell k open square brackets 0 comma 1 close square brackets squared open square brackets 0 comma 05 close square brackets end cell row k equals cell fraction numerator 6 over denominator 5 cross times 10 to the power of negative sign 4 end exponent end fraction end cell row k equals cell 12.000 end cell end table 

V equals 12.000 space open square brackets N O close square brackets squared open square brackets Br subscript 2 close square brackets


Jadi, orde reaksi dari NO dan Br2 adalah 2 dan1, orde reaksi totalnya 3, dan persamaan laju reaksinya V bold equals bold 12 bold. bold 000 bold space begin bold style open square brackets N O close square brackets end style to the power of bold 2 begin bold style open square brackets Br subscript 2 close square brackets end style.space

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 02 Juni 2021

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