WBJEE · Chemistry · Practical Chemistry
Addition of sodium thiosulphate solution to a solution of silver nitrate gives \(X\) as white precipitate, insoluble in water but soluble in excess thiosulphate solution to give \(Y\). On boiling in water, \(Y\) gives \(Z . X, Y\) and \(Z\) respectively are
- A \(\mathrm{Ag}_{2} \mathrm{S}_{2} \mathrm{O}_{3} \cdot \mathrm{Na}_{3}\left[\mathrm{Ag}\left(\mathrm{S}_{2} \mathrm{O}_{3}\right)_{2}\right], \mathrm{Ag}_{2} \mathrm{S}\)
- B \(\mathrm{Ag}_{2} \mathrm{SO}_{4}, \mathrm{Na}\left[\mathrm{Ag}\left(\mathrm{S}_{2} \mathrm{O}_{3}\right)_{2}\right], \mathrm{Ag}_{2} \mathrm{S}_{2}\)
- C \(\mathrm{Ag}_{2} \mathrm{S}_{2} \mathrm{O}_{3} \cdot \mathrm{Na}_{5}\left[\mathrm{Ag}\left(\mathrm{S}_{2} \mathrm{O}_{3}\right)_{3}\right], \mathrm{AgS}\)
- D \(\mathrm{Ag}_{2} \mathrm{SO}_{3} \cdot \mathrm{Na}_{3}\left[\mathrm{Ag}\left(\mathrm{S}_{2} \mathrm{O}_{3}\right)_{2}\right], \mathrm{Ag}_{2} \mathrm{O}\)
Answer & Solution
Correct Answer
(A) \(\mathrm{Ag}_{2} \mathrm{S}_{2} \mathrm{O}_{3} \cdot \mathrm{Na}_{3}\left[\mathrm{Ag}\left(\mathrm{S}_{2} \mathrm{O}_{3}\right)_{2}\right], \mathrm{Ag}_{2} \mathrm{S}\)
Step-by-step Solution
Detailed explanation
The sequence of reactions are Hence, \(X=A g_{2} S_{2} O_{3}\) \(Y=\mathrm{Na}_{3}\left[\mathrm{Ag}\left(\mathrm{S}_{2} \mathrm{O}_{3}\right)_{2}\right] Z=\mathrm{Ag}_{2} \mathrm{S}\)
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