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JEE Main20208 Jan 2020Morning ShiftChemistrySurface ChemistryActual

As per Hardy-Schulze formulation, the flocculation values of the following for ferric hydroxide sol are in the order:

Options

  1. AK 3 F e C N 6 < K 2 C r O 4 < K B r = K N O 3 = A l C l 3
  2. BK 3 F e C N 6 < K 2 C r O 4 < A l C l 3 < K B r < K N O 3
  3. CA l C l 3 > K 3 F e C N 6 > K 2 C r O 4 > K B r = K N O 3
  4. DK 3 F e C N 6 > A l C l 3 > K 2 C r O 4 > K B r > K N O 3

Correct answer

A. K 3 F e C N 6 < K 2 C r O 4 < K B r = K N O 3 = A l C l 3

Step-by-step solution

According to hardy-schultz rule, Coagulation value or flocculation value ∝ 1 C o a g u l a t i o n p o w e r

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