(Nh4)2S+HCL--> Al2(So4)3+NH3*H20 --> Sn(NO3)4 +NaOH -->
(Nh4)2S+HCL--> Al2(So4)3+NH3*H20 -->
Sn(NO3)4 +NaOH -->
(Nh4)2S+2HCL-->2NH4Cl+H2S Al2(So4)3+3NH3*H20 -->2Al(OH)3(osad)+3(NH4)2SO4 Sn(NO3)4 +4NaOH -->Sn(OH)4(osad) + 4NaNO3