Question

Which of the following mixture will lead to the formation of negatively charged colloid $ \left[AgI\right]I^{\Theta}$ ?

• A. $50$ ml of $0.1 M AgNO_{3} + 50$ ml of $0.1 M KI$
• B. $50$ ml of $0.1 M AgNO_{3} + 50$ ml of $0.2 M KI$
• C. $50$ ml of $0.2 M AgNO_{3} + 50$ ml of $0.1 M KI$
• D. $50$ ml of $0.2 M AgNO_{3} + 50$ ml of $0.2 M KI$

Answer 1

Answer: (B)

$ \left[AgI\right]I^{\Theta}$ colloid will be formed only when the iodide ion is present in excess.