Analytical Chemistry Question 177
Question: An aqueous solution of a substance gives a white precipitate on treatment with dil. $ HCl $ which dissolves on heating. When $ H_2S $ is passed through the hot acidic solution, a black precipitate is obtained. The substance is a
Options:
A) $ Hg_2^{2+} $ salt
B) $ C{u^{2+}} $ salt
C) $ A{g^{+}} $ alt
D) $ P{b^{2+}} $ salt
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Answer:
Correct Answer: D
Solution:
[d] $ PbCl_2 $ is insoluble in cold water, soluble in hot water and PbS is black ppt in acidic medium.
BETA
