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Data percobaan reaksi: 2NO(g)+2H2​(g)→N2​(g)+2H2​O(g) sebagai berikut. Berdasarkan data tersebut, tentukan harga orde reaksi terhadap [NO] dan [H2​] serta persamaan reaksinya!

Pertanyaan

Data percobaan reaksi: begin mathsize 14px style 2 N O open parentheses italic g close parentheses and 2 H subscript 2 open parentheses italic g close parentheses yields N subscript 2 open parentheses italic g close parentheses and 2 H subscript 2 O open parentheses italic g close parentheses end style sebagai berikut.



Berdasarkan data tersebut, tentukan harga orde reaksi terhadap [NO] dan begin mathsize 14px style bold open square brackets H subscript bold 2 bold close square brackets end style serta persamaan reaksinya!

N. Puspita

Master Teacher

Jawaban terverifikasi

Jawaban

orde reaksi N O dan begin mathsize 14px style H subscript 2 end style berturut turut yaitu 1 dan 1.

Pembahasan

Orde reaksi adalah bilangan yang menyatakan bilangan pangkat konsentrasi. Orde reaksi berpengaruh pada cepatnya laju reaksi.


Orde space N O fraction numerator v 1 over denominator v 2 end fraction equals left parenthesis fraction numerator N over denominator O N O end fraction right parenthesis to the power of m left parenthesis H subscript 2 over H subscript 2 right parenthesis to the power of n fraction numerator 4 cross times 10 to the power of negative sign 6 end exponent over denominator 8 cross times 10 to the power of negative sign 6 end exponent end fraction equals left parenthesis fraction numerator 2 cross times 10 to the power of negative sign 3 end exponent over denominator 4 cross times 10 to the power of negative sign 3 end exponent end fraction right parenthesis to the power of m left parenthesis fraction numerator 2 cross times 10 to the power of negative sign 3 end exponent over denominator 2 cross times 10 to the power of negative sign 3 end exponent end fraction right parenthesis to the power of n 0 comma 5 equals 0 comma 5 to the power of m m equals 1  Orde space H subscript 2 fraction numerator v 4 over denominator v 5 end fraction equals left parenthesis fraction numerator N over denominator O N O end fraction right parenthesis to the power of m left parenthesis H subscript 2 over H subscript 2 right parenthesis to the power of n fraction numerator 24 cross times 10 to the power of negative sign 2 end exponent over denominator 32 cross times 10 to the power of negative sign 2 end exponent end fraction equals left parenthesis fraction numerator 4 cross times 10 to the power of negative sign 3 end exponent over denominator 4 cross times 10 to the power of negative sign 3 end exponent end fraction right parenthesis to the power of m left parenthesis fraction numerator 6 cross times 10 to the power of negative sign 3 end exponent over denominator 8 cross times 10 to the power of negative sign 3 end exponent end fraction right parenthesis to the power of n 3 over 4 equals 3 over 4 to the power of n n equals 1  Persamaan space laju space reaksi v double bond k open square brackets N O close square brackets open square brackets H subscript 2 close square brackets  

Menghitung nilai k dengan data pertama

table attributes columnalign right center left columnspacing 0px end attributes row v equals cell k open square brackets N O close square brackets open square brackets H subscript 2 close square brackets end cell row cell 4 cross times 10 to the power of negative sign 6 end exponent end cell equals cell k cross times left parenthesis 2 cross times 10 to the power of negative sign 3 end exponent right parenthesis cross times left parenthesis left parenthesis 2 cross times 10 to the power of negative sign 3 end exponent right parenthesis end cell row cell 4 cross times 10 to the power of negative sign 6 end exponent end cell equals cell k cross times left parenthesis 4 cross times 10 to the power of negative sign 6 end exponent right parenthesis end cell row k equals 1 end table 

Maka, persamaan laju reaksinya adalah: italic v bold equals bold open square brackets N O bold close square brackets bold open square brackets H subscript bold 2 bold close square brackets 

Jadi orde reaksi N O dan begin mathsize 14px style H subscript 2 end style berturut turut yaitu 1 dan 1.

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