Chemical Kinetics and Nuclear ChemistryMedium
Question
Which of the following ions will have the minimum coagulating value for the sol obtained by adding FeCl3 solution to slight excess of NaOH
Options
A.So42-
B.[Fe(CN)6]3-
C.Ba2+
D.Al3+
Solution
FeCl3 + 3NaOH → Fe(OH)3(s) + 3NaCl
Fe(OH)3 + OH-(form excess of NaOH) → [Fe(OH)3] OH-
The sol is nagatively charged and would be coagulated most effectively by Al3+.
Fe(OH)3 + OH-(form excess of NaOH) → [Fe(OH)3] OH-
The sol is nagatively charged and would be coagulated most effectively by Al3+.
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