a HNO3 +b H2S -> c NO + d S + e H2O agar setara a, b , c,d dan e berturut turut adalah

→ Atom H
1 + 2a = 2d

→ Atom N
1 = b
b = 1

→ Atom O
3 = b + d

→ Atom S
a = c

→ Persamaan :
b + d = 3
d = 3 - b
d = 3 - 1
d = 2

1 + 2a = 2d
2a = 2d - 1
2a = 2(2) - 1
2a = 4 - 1
2a = 3
a = 3/2

b = 1

c = a
c = 3/2

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