A) \[{{H}^{+}}\]
B) \[{{S}^{2-}}\]
C) \[O{{H}^{-}}\]
D) \[{{O}^{2-}}\]
Correct Answer: B
Solution :
\[A{{s}_{2}}{{O}_{3}}(aq)+3{{H}_{2}}S(aq)\xrightarrow[{}]{{}}\underset{\begin{smallmatrix} Colloidal \\ sol \end{smallmatrix}}{\mathop{A{{s}_{2}}{{S}_{3}}}}\,+3{{H}_{2}}O\] \[A{{S}_{2}}{{S}_{3}}\]then adsorbs\[{{S}^{2-}}\]ions from\[{{H}_{2}}S\]solution containing\[{{H}^{+}}\]and\[{{S}^{2-}}\]ions and becomes negatively charged.
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