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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Surface Chemistry

NTA Abhyas 2020 · Chemistry · Surface Chemistry

Which of the following electrolytes will have maximum coagulating...

Which of the following electrolytes will have maximum coagulating value for \dfrac{AgI}{Ag^{+}}$ sol?

Options

  1. ANa2SN{a}_{2}S
  2. BNa3PO4N{a}_{3}P{O}_{4}
  3. CNa2SO4N{a}_{2}S{O}_{4}
  4. DNaCl

Correct answer

D. NaCl

Step-by-step solution

Coagulating power ∝1coagulatingvalue∝charge∝ \dfrac{1}{coagulating\text{value}} ∝ \text{charge}

As AgIAg+\dfrac{AgI}{Ag^{+}} is a positive sol so negative ion will cause the coagulation.

Ions of the given electrolytes are, S2−,PO43−,SO42−S^{2 -}, P{O}_{4}^{3 -}, S{O}_{4}^{2 -} and Cl−Cl^{-} .

As Cl−Cl^{-} has minimum charge thus has maximum coagulating value.
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