{:(FeCI_(3)"solution" +(NH_(4))_(2)S overset("Neutral medium")rarr,"Black ppt".(A)),(,""darrdil.H_(2)SO_(4)),(,"White ppt". (B) +Gas (C)):} while AICI_(3) solution +(NH_(4))_(2)S rarr White ppt.(D) What is the formula of black ppt.(A)?

{:(FeCI_(3)"solution" +(NH_(4))_(2)S overset("Neutral medium")rarr,"Bl

1.	{:(FeCI_(3)"solution" +(NH_(4))_(2)S overset("Neutral medium")rarr,"Black ppt".(A)),(,""darrdil.H_(2)SO_(4)),(,"White ppt". (B) +Gas (C)):} while AICI_(3) solution +(NH_(4))_(2)S rarr White ppt.(D) What is the formula of black ppt.(A)?
Answer» `Fe_(2)S_(3)` `FeS` `2FES +S` `FeS + FE(OH)_(3)` Answer :C