Roboguru

Data laju penguraian asetildehida disajikan pada tabel berikut.   Untuk konsentrasi , maka laju reaksinya?

Pertanyaan

Data laju penguraian asetildehida disajikan pada tabel berikut.

 

Untuk konsentrasi begin mathsize 14px style C H subscript 3 C O H space 1 comma 0 cross times 10 to the power of negative sign 2 end exponent end style, maka laju reaksinya?undefined 

Pembahasan Soal:

Untuk menentukan laju reaksi dengan konsentrasi tertentu, maka harus mengetahui orde reaksi dan konstanta reaksinya terlebih dahulu.

1) Mencari nilai orde reaksi


       begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell v subscript 2 over v subscript 1 end cell equals cell fraction numerator up diagonal strike k space open square brackets C H subscript 3 C O H close square brackets subscript 2 superscript x over denominator up diagonal strike k space open square brackets C H subscript 3 C O H close square brackets subscript 1 superscript x end fraction end cell row cell fraction numerator 3 comma 6 cross times 10 to the power of negative sign 4 end exponent over denominator 1 comma 2 cross times 10 to the power of negative sign 4 end exponent end fraction end cell equals cell open parentheses fraction numerator 4 comma 5 cross times 10 to the power of negative sign 3 end exponent over denominator 1 comma 5 cross times 10 to the power of negative sign 3 end exponent end fraction close parentheses to the power of x end cell row 3 equals cell 3 to the power of x end cell row 1 equals x end table end style 


2) Mencari nilai k


       begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 1 comma 2 cross times 10 to the power of negative sign 4 end exponent end cell equals cell k space left parenthesis 1 comma 5 cross times 10 to the power of negative sign 3 end exponent right parenthesis to the power of 1 space end cell row cell fraction numerator 1 comma 2 cross times 10 to the power of negative sign 4 end exponent over denominator 1 comma 5 cross times 10 to the power of negative sign 3 end exponent end fraction end cell equals cell k space end cell row cell 0 comma 08 end cell equals k end table end style 


3) Mencari laju reaksi dengan konsentrasi begin mathsize 14px style 1 comma 0 cross times 10 to the power of negative sign 2 end exponent end style 


       begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row v equals cell k space open square brackets C H subscript 3 C O H close square brackets end cell row blank equals cell 0 comma 08 cross times 1 comma 0 cross times 10 to the power of negative sign 2 end exponent end cell row blank equals cell 8 cross times 10 to the power of negative sign 4 end exponent end cell end table end style 


Jadi, laju reaksi untuk konsentrasi begin mathsize 14px style C H subscript 3 C O H space 1 comma 0 cross times 10 to the power of negative sign 2 end exponent end style sebesar begin mathsize 14px style 8 cross times 10 to the power of negative sign 4 end exponent end style.undefined 

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 15 Maret 2021

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