Setarakan Persamaan reaksi berikut : ZnS + HNO3 + HCl = ZnCl2 + NO + H2O + S8

PENYETARAAN REAKSI

aZnS + bHNO3 + cHCl --> dZnCl2 + eNO + fH2O + gS8


Zn : a = d (i)
S : a = 8g (ii)
H : b + c = 2f (iii)
N : b = e (iv)
O : 3b = e + f (v)
Cl : c = 2d (vi)

masukan iv ke v

3e = e + f
2e = f <--> 2b = f

dari (iii)
b + c = 4b
c = 3b

misal a = 1
d = 1
g = ⅛
c = 2
b = ⅔
e = ⅔
f = 4/3

kali smua dgn 24

a = 24
b = 16
c = 48
d = 24
e = 16
f = 32
g = 3

masukkan

24ZnS + 16HNO3 + 48HCl --> 24ZnCl2 + 16NO + 32H2O + 3S8