HgCl2 + Cu = CuCl2 + Hg
CuCl2 + 2AgNO3 = Cu(NO3)2 + 2AgCl↓
Cu[2+] + 2Cl[-] + 2Ag[+] + 2NO3[-] = Cu[2+] + 2NO3[-] + 2AgCl↓
2Ag[+] + 2Cl[-] = 2AgCl↓
Cu(NO3)2 + 2KOH = Cu(OH)2 + 2KNO3
HgCl2 + Cu = CuCl2 + Hg
CuCl2 + 2AgNO3 = Cu(NO3)2 + 2AgCl↓
Cu[2+] + 2Cl[-] + 2Ag[+] + 2NO3[-] = Cu[2+] + 2NO3[-] + 2AgCl↓
2Ag[+] + 2Cl[-] = 2AgCl↓
Cu(NO3)2 + 2KOH = Cu(OH)2 + 2KNO3