Question

Completeaza ecuatiile reactiilor
a)H2S+NaOH--->?+?
b)Na2S+ZNCl2--->ZnS+?
alb
c)AgNO3+H2S--->Ag2S+?
negru
d)H2S+Pb(NO3)2--->Pb+S
negru
e)H2S+CuSO4--->CuS+?
negru
f)Na2S+FeSO4--->?
brun
Scrie ecuatiile reactiilor in forma moleculare si ionica. Trage concluzii privind solubilitatea sulfurilor in baza ecuatiilor si a tabelului solubilitatii.


ajutatima varog!!!!!

Answer 1

FM:H2S+NaOH=NaS+H2O
FI:H2+S+Na+OH=Na+S+H2O
FM:Na2S+ZnCl2=ZnS+2NaCl
FI:Na+S+Zn+Cl=Zn+S+NaCl
FM:2AgNO3+H2S=Ag2S+HNO3
FI:Ag+No3+H+S=Ag+S+HNO3
FM:H2S+Pb(NO3)2=Pb+S+HNO3
FI:H+S+Pb+NO3=Pb+S+HNO3
FM:H2S+CuSO4=CuS+2HSO4
FI:H+S+Cu+SO4=Cu+S+HSO4
FM:Na2S+2FeSO4=Fe2S+2NaSO4
FI:Na+S+Fe+SO4=Fe+S+NaSO4

Answer 2

H2S+2NaOH=Na2S+H2O
H2S+2NaOH=Na2S+H2O
Na2S+ZnCl2=ZnS+2NaCl
Na2S+ZnCl2=ZnS+2NaCl
2AgNO3+H2S=Ag2S+2HNO3
AgNO3+H2S=Ag2S+HNO3
H2S+Pb(NO3)2=Pb+S+2HNO3
H2S+Pb(NO3)2=PbS+2HNO3
H2S+CuSO4=CuS+2HSO4
H2S+CuSO4=Cu+S+HSO4
Na2S+2FeSO4=FeS+2NaSO4
Na2S+FeSO4=FeS+2NaSO4