Question

CuCl2 + H2s =
Na2CO3 + HCl =
ZnCl2 + NaOH =

Answer 1

H2S+CuCL2=2HCl+CuS
Na2CO3+2HCL=H2CO3 + 2NaCl
ZnCl2 + 2NaOH = Zn(OH)2↓ + 2NaCl 

Answer 2

CuCl2+H2S=CuS(осадок)+2HCl
Na2CO3+2HCl=2NaCl+H2O+CO2
ZnCl2+2NaOH=2NaCl+Zn(OH)2 - осадок