NEET2019ChemistrySurface ChemistryActual
Which mixture of the solutions will lead to the formation of negatively charged colloidal A g I I - sol?
Options
- A50   m L   o f   1   M   A g N O 3 + 50   m L   o f   0 .5   M &#
- B50 m L o f 1 M A g N O 3 + 50 m L o f 2 M K I
- C50 m L o f 2 M A g N O 3 + 50 m L o f 1.5 M K I
- D50 m L o f 0.1 M A g N O 3 + 50 m L o f 0.1 M K I
Correct answer
B. 50 m L o f 1 M A g N O 3 + 50 m L o f 2 M K I
Step-by-step solution
The common ion between the colloidal particles and the remaining solution gets adsorbed on the surface of the colloidal particles and thus the particles acquire charge. Formation of negatively charged colloidal [ A g I ] I - sol: 50   m l of 1   M A g N O 3 + 50   m l    2.0  M  KI Millimoles of A g + = 50 × 1   m = 50   m   m o l e s Millimoles of I - = 50 × 2 = 100   m    m o l e s n I - > n A g + ∴ it will form negati