A) \[{{[Ag{{({{S}_{2}}{{O}_{3}})}_{2}}]}^{3-}},A{{g}_{2}}{{S}_{2}}{{O}_{3}},A{{g}_{2}}S\]
B) \[{{[Ag{{({{S}_{2}}{{O}_{3}})}_{3}}]}^{5-}},A{{g}_{2}}{{S}_{2}}{{O}_{3}},A{{g}_{2}}S\]
C) \[{{[Ag{{(S{{O}_{3}})}_{2}}]}^{3-}},A{{g}_{2}}{{S}_{2}}{{O}_{3}},Ag\]
D) \[{{[Ag{{(S{{O}_{3}})}_{3}}]}^{3-}},A{{g}_{2}}S{{O}_{4}},Ag\]
Correct Answer: A
Solution :
| \[{{\operatorname{S}}_{2}}O_{3}^{2-}\xrightarrow{A{{g}^{+}}}{{\underset{\begin{smallmatrix} \,\,\,\,\,\,\,\,\,\,\,\left( X \right) \\ clear\,solution\, \end{smallmatrix}}{\mathop{\left[ Ag\left( {{S}_{2}}{{O}_{3}} \right) \right]}}\,}^{3-}}\xrightarrow{A{{g}^{+}}}\]\[\underset{\begin{smallmatrix} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left( Y \right) \\ \,\,\,\,white\,precipitate \end{smallmatrix}}{\mathop{A{{g}_{2}}{{S}_{2}}{{O}_{3}}\downarrow }}\,\xrightarrow{\operatorname{on}\,standing}\underset{\begin{smallmatrix} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left( Z \right) \\ black\,precipitate \end{smallmatrix}}{\mathop{A{{g}_{2}}\operatorname{S}\downarrow }}\,\] |
| So, X, Y and Z are \[{{\left[ Ag{{\left( {{s}_{2}}{{O}_{3}} \right)}_{2}} \right]}^{3-}},A{{g}_{2}}{{S}_{2}}{{O}_{3}}\]and \[{{\operatorname{Ag}}_{2}}S\]respectively. |
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