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Pada reaksi: diperoleh data sabagai berikut! Tentukan: a. Orde reaksi P dan Q b. Tuliskan persamaan laju reaksinya

Pada reaksi: begin mathsize 14px style P and Q yields PQ end style diperoleh data sabagai berikut!


 


Tentukan:
a. Orde reaksi P dan Q
b. Tuliskan persamaan laju reaksinyaspace 

Jawaban:

Laju reaksi merupakan laju berkurangnya konsentrasi pereaksi per satuan waktu. Orde reaksi P dan Q dapat diketahui melalui cara berikut ini;


begin mathsize 14px style v subscript 1 over v subscript 3 equals fraction numerator open square brackets P close square brackets subscript 1 superscript x space open square brackets Q close square brackets subscript 1 superscript italic y over denominator open square brackets P close square brackets subscript 3 superscript x space open square brackets Q close square brackets subscript 3 superscript italic y end fraction fraction numerator 1 comma 4 cross times 10 to the power of negative sign 1 end exponent over denominator 7 comma 0 cross times 10 to the power of negative sign 2 end exponent end fraction equals fraction numerator left parenthesis 6 comma 0 cross times 10 to the power of negative sign 3 end exponent right parenthesis to the power of x space left parenthesis 1 comma 6 cross times 10 to the power of negative sign 2 end exponent right parenthesis to the power of y over denominator left parenthesis 6 comma 0 cross times 10 to the power of negative sign 3 end exponent right parenthesis to the power of x space left parenthesis 8 comma 0 cross times 10 to the power of negative sign 3 end exponent right parenthesis to the power of y end fraction 2 equals 2 to the power of y y equals 1  v subscript 2 over v subscript 3 equals fraction numerator open square brackets P close square brackets subscript 2 superscript x space open square brackets Q close square brackets subscript 2 superscript italic y over denominator open square brackets P close square brackets subscript 3 superscript x space open square brackets Q close square brackets subscript 3 superscript italic y end fraction fraction numerator 3 comma 5 cross times 10 to the power of negative sign 2 end exponent over denominator 7 comma 0 cross times 10 to the power of negative sign 2 end exponent end fraction equals fraction numerator left parenthesis 3 comma 0 cross times 10 to the power of negative sign 3 end exponent right parenthesis to the power of x space left parenthesis 8 comma 0 cross times 10 to the power of negative sign 3 end exponent right parenthesis to the power of y over denominator left parenthesis 6 comma 0 cross times 10 to the power of negative sign 3 end exponent right parenthesis to the power of x space left parenthesis 8 comma 0 cross times 10 to the power of negative sign 3 end exponent right parenthesis to the power of y end fraction 1 half equals 1 half to the power of x x equals 1 end style  


Setelah mendapatkan orde P dan Q, kita dapat menentukan persamaan laju reaksinya sebagai berikut:


begin mathsize 14px style v double bond k space open square brackets P close square brackets space open square brackets Q close square brackets end style 
 

Jadi, orde raksi P dan Q masing-masing adalah 1 dan persamaan laju reaksinya v=k [P] [Q].space 

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