Question

On adding $AgNO _{3}$ solution into $KCl$ solute, a positively charged colloidal sol is obtained when they are mixed in:

• A. $200 ml$ of $0.2 M AgNO _{3}+200 ml$ of $0.2 M KCl$
• B. $100 ml$ of $0.1 M AgNO _{3}+50 ml$ of $0.2 M KCl$
• C. $100 ml$ of $0.15 M AgNO _{3}+100 ml$ of $0.1 M KCl$
• D. $100 ml$ of $0.1 M AgNO _{3}+100 ml$ of $0.15 M KCl$

Answer 1

Answer: (C)

A positively charged will be obtained when $AgNO_3$ is in large quantity