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General Principles and processes of Isolation of Elements
medium
$20\,mL$ of $0.5\,M\,NaCl$ is required to coagulate $200\,mL$ of $As _2 S _3$ solution in $2$ hours. The coagulating value of $NaCl$ is $...........$.
A
$50$
B
$40$
C
$30$
D
$20$
(JEE MAIN-2023)
Solution
Coagulating value is required milimole of electrolyte needed to coagulate $1 L$ sol in 2 hours.
$\text { Coagulating value }=\frac{20 \times 0.5}{200} \times 1000=50$
Standard 12
Chemistry
