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JEE Main 20199 JanuaryEvening Shift
Exam
JEE Main
Year
2019
Date
9 January
Shift
Evening Shift
Subject
Chemistry
Chapter
Surface Chemistry

JEE Main 2019 · 9 January · Evening Shift · Chemistry · Surface Chemistry

For coagulation of arsenious sulphide sol, which of the following...

For coagulation of arsenious sulphide sol, which of the following salt solutions will be most effective?

Options

  1. ANa3PO4N{a}_{3}P{O}_{4}
  2. BNaClNaCl
  3. CAlCl3AlC{l}_{3}
  4. DBaCl2BaC{l}_{2}

Correct answer

C. AlCl3AlC{l}_{3}

Step-by-step solution

According to Hardy's -schulz rule, greater the valency of the active ion or flocculating ion greater will be its coagulating power. S−2{S}^{- 2} is −ve- ve charged colloid so cation having more +ve+ ve charge, more will be coagulating power.

Hence Al+3A{l}^{+ 3} having maximum coagulating power
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