A solution X, on mixing with AgNO\(^3\) solution, gives a white precipitate soluble in NH\(^3\)....
A solution X, on mixing with AgNO\(^3\) solution, gives a white precipitate soluble in NH\(^3\). A solution Y when added to X, also gives a white precipitate which is soluble on boiling. Solution Y contains
- A)Ag\(^+\)
- B)Pb\(^{2+}\)
- C)Pb\(^{4+}\)
- D)Zn\(^{2+}\)
Correct Answer: B)Pb\(^{2+}\)
Explanation
This question is asking about two solutions, X and Y, and their reactions with silver nitrate (AgNO\(^3\)). When solution X is mixed with AgNO\(^3\) solution, it gives a white precipitate. The precipitate is soluble in NH\(^3\). When solution Y is added to X, a white precipitate is also formed. However, this precipitate is soluble on boiling. The question then asks which of the given options is present in solution Y. The options are Ag\(^+\), Pb\(^{2+}\), Pb\(^{4+}\), and Zn\(^{2+}\). The correct answer is option B, Pb\(^{2+}\). The fact that the white precipitate formed in solution Y is soluble on boiling suggests that it is not Ag\(^+\), which would not dissolve upon boiling. Pb\(^{4+}\) is an unlikely option, as it is a highly oxidizing agent and is not commonly found in solutions. Zn\(^{2+}\) is also unlikely, as it does not form a white precipitate with AgNO\(^3\) solution. Therefore, the correct answer is option B, Pb\(^{2+}\). This suggests that solution Y contains Pb\(^{2+}\) ions, which react with the AgNO\(^3\) solution to form the white precipitate. To learn more about this, please read the relevant sections of the recommended textbooks.