Analytical Chemistry Question 58
$ H_2S $ will precipitate the sulphides of all the metals from the solution of chlorides of $ Cu,Zn $ and $ Cd $, if
[MP PMT 1985]
Options:
A) The solution is aqueous
B) The solution is acidic
C) The solution is dilute acid
D) Any of these solutions is present in the sample
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Answer:
Correct Answer: C
Solution:
Due to common ion effect as $ HCl\ \to \ {H^{+}}\ +\ {Cl^{-}} $ ; $ H_2S\ \to \ 2\ {H^{+}}+\ {S^{2-}} $ .
BETA
