Cation of white silvery metal when react with dil. HCl in presence of air then white ppt of 'X' is formed, 'X' is in soluble in dil. HNO 3 but soluble in NH 3 solution. Which o

Question

Cation of white silvery metal when react with dil. HCl in presence of air then white ppt of 'X' is formed, 'X' is in soluble in dil. HNO 3 ​ but soluble in NH 3 ​ solution. Which of the following statements are CORRECT :-

TestHub · Accepted Answer

The white silvery metal is Ag (Silver). On reaction with dilute HCl in the presence of air, it forms AgCl (X) as a white precipitate.

$4 A g + 4 H Cl + O_{2} \to 4 A g Cl ↓ + 2 H_{2} O$

AgCl is insoluble in dilute HNO₃ but dissolves in NH₃ solution due to the formation of $[A g (N H_{3})_{2}]^{+}$ .

AgCl dissolves in KCN and hypo solution ( $N a_{2} S_{2} O_{3}$ ) by complex formation.

Passing H₂S through the AgCl solution in cyanide gives black Ag₂S ppt.

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Options:(select one or more)

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