1.

According to Hardy Schultz rule, correct order of flocculation value for Fe(OH)3 sol is : (1) K2CrO4 > K3[Fe(CN)6] > KNO3 > KBr = AlCl3 (2) K3[Fe(CN)6] > K2CrO4 > KNO3 = KBr = AlCl3 (3) K3[Fe(CN)6] < K2CrO4 < KNO3 = KBr = AlCl3 (4) KNO3 > KBr = K2CrO4 > AlCl3 = K3[Fe(CN)6] 

Answer»

Answer: (3) K3[Fe(CN)6] < K2CrO4 < KNO3 = KBr = AlCl

According to hardy-schultz rule,

Coagulation value or flocculation value ∝ 1/Coagulation power



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