Setarakan (HN4)2 So4 (aq) + NaOH ---> Na2 So4 + NH3 + H2O

1 . (HN4)2SO4(aq) + a . NaOH ---> b . Na2SO4 + c . NH3 + d . H2O

H = 2+a = 3c+2d
N = 8 = c
S = 1 = b
O = 4+a = 4b + d
Na = a = 2b

a=2b
a=2.1
= 2

4+a = 4b + d
4+2 = 4.1 + d
6 = 4 + d
d = 2

menjadi :
(HN4)2SO4(aq)+ 2NaOH ---> Na2SO4 + 8 NH3 + 2H20