Which mixture of the solutions will lead to the formation of negatively charged colloidal [Agl]l– sol. ?
(1) 50 mL of 1 M AgNO3 + 50 mL of 1.5 M KI
(2) 50 mL of 1 M AgNO3 + 50 mL of 2 M KI
(3) 50 mL of 2 M AgNO3 + 50 mL of 1.5 M KI
(4) 50 mL of 0.1 M AgNO3 + 50 mL of 0.1 M KI