Br2->HBr->CuBr2->ZnBr2->AgBr

Question

Br2->HBr->CuBr2->ZnBr2->AgBr

Answer 1

1)Br2 +H2=2HBr

2)2HBr + Cu(OH)2=CuBr2 + 2H20 

3)CuBr2 + Zn = ZnBr2 + Cu

4)ZnBr2 + 2AgNO3= Zn(NO3)2 + 2AgBr(осадок)