Which mixture of the solutions will lead to the formation of negatively charged colloidal `[Agl]^(-)` sol. ?

Options

A. 50 ml of 0.1M `AgNO_(3)` + 50mL of 0.1 M KI
B. 50mL of 1M `AgNO_(3)` + 50mL of 1.5 M KI
C. 50 mL of 1 M `AgNO_(3)` +50 mL of 2 M KI
D. 50mL of 2M `AgNO_(3)` + 50mL of 1.5 M KI

Answer

B

Explanation

In compare to 1.5M KI, 2M KI is conc. Solution and In 2M KI solution , extra `K^(+)` ion lead coagulation so better option is 1.5M KI.