Which reaction gives colloidal solution
Cu+HgCl2→CuCl2+Hg
2HNO3+3H2S→3S+4H2O+2NO
2Mg+CO2→2MgO+C
Cu+CuCl2→Cu2Cl2
‘S’ forms multi molecular colloidal particles
balance this equation
Cu(HCO3)2 + HCl => CuCl2 + H2O + CO2