Question: A student was asked to identify a compound. In an effort to do so, he first dissolved the compound in water. He found that no

A student was asked to identify a compound. In an effort to do so, he first dissolved the compound in water. He found that no precipitate formed when hydrochloric acid was added, but when H2S was bubbled into this acidic solution, a precipitate formed. Which one of the following could be the precipitate?
a. PbCl2
b. CbS
c. MnS
d. Ag2S

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