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Chemistry
Which of the following salt solutions would coagulate the colloid solution formed when FeCl 3 is added to NaOH solution, at the fastest rate?
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Q. Which of the following salt solutions would coagulate the colloid solution formed when $FeCl _3$ is added to $NaOH$ solution, at the fastest rate?
JEE Main
JEE Main 2023
Surface Chemistry
A
$10\, mL$ of $0.1 \,mol\, dm ^{-3} Ca _3\left( PO _4\right)_2$
B
$10\, mL$ of $0.2 \,mol \,dm ^{-3} AlCl _3$
C
$10 \,mL$ of $0.15\, mol \,dm ^{-3} CaCl _2$
D
$10 \,mL$ of $0.1 \,mol \,dm ^{-3} Na _2 SO _4$
Solution:
Formed is negatively charged solution, therefore $Al ^{3+}$ has highest coagulating power