Question

Which of the following statement $(s) $ is/are correct?

• A. Sulphide gives black precipitate with $AgNO _{3}$ solution and is soluble in hot concentrated nitric acid
• B. Sulphide gives no precipitate with barium chloride solution
• C. Sulphide ions react with sodium nitroprusside giving a purple colouration
• D. All of these

Answer 1

Answer: (D)

(a) $S^{2-}+ Ag ^{+} \rightarrow Ag _{2} S$ soluble in hot $HNO _{3}$

(b) $S ^{2-}+ BaCl _{2} \rightarrow$ no reaction

(c) $Na _{2} S + Na _{2}[ Fe ( CN )_{5} NO ] \rightarrow \underset{\text{purple colour}}{Na _{4}[ Fe ( CN )_{5} NOS ]}$