Setarakan persamaan reaksi berikut ini.

$begin mathsize 14px style N H subscript 3 open parentheses italic g close parentheses and O subscript 2 open parentheses italic g close parentheses yields N O open parentheses italic g close parentheses and H subscript 2 O open parentheses italic l close parentheses end style$

Jawaban:

Langkah 1: membuat pemisalan angka koefisien

$begin mathsize 14px style italic a N H subscript 3 open parentheses italic g close parentheses and italic b O subscript 2 open parentheses italic g close parentheses yields italic c N O open parentheses italic g close parentheses and italic d H subscript 2 O open parentheses italic l close parentheses end style$

Langkah 2: menentukan angka koefisien

misal a = 1

N :

$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row a equals c row c equals 1 row blank blank blank end table end style$

H :

$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 3 a end cell equals cell 2 d end cell row cell 3 left parenthesis 1 right parenthesis end cell equals cell 2 d end cell row d equals cell 3 over 2 end cell end table end style$

O :

$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 2 b end cell equals cell c and d end cell row cell 2 b end cell equals cell 1 plus 3 over 2 end cell row cell 2 b end cell equals cell 5 over 2 end cell row b equals cell 5 over 4 end cell end table end style$

Dengan demikian, reaksi setaranya adalah:

$begin mathsize 14px style N H subscript 3 open parentheses italic g close parentheses plus begin inline style bold 5 over bold 4 end style O subscript 2 open parentheses italic g close parentheses yields N O open parentheses italic g close parentheses and begin inline style bold 3 over bold 2 end style H subscript 2 O open parentheses italic l close parentheses end style$

Jika angka koefisien dikalikan empat, persamaan reaksi menjadi:

$begin mathsize 14px style bold 4 N H subscript 3 open parentheses italic g close parentheses and bold 5 O subscript 2 open parentheses italic g close parentheses yields bold 4 N O open parentheses italic g close parentheses and bold 6 H subscript 2 O open parentheses italic l close parentheses end style$

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