A) \[Sn{{(OH)}_{2}},\,N{{a}_{2}}Sn{{O}_{3}}\]
B) \[Sn{{(OH)}_{2}},\,N{{a}_{2}}Sn{{O}_{2}}\]
C) \[Sn{{(OH)}_{2}},\,N{{a}_{2}}[Sn{{[OH)}_{2}}]\]
D) \[Sn{{(OH)}_{2}}\], no effect
Correct Answer: B
Solution :
\[SnC{{l}_{2}}+2NaOH\xrightarrow{{}}\underset{white\text{ }ppt}{\mathop{Sn{{(OH)}_{2}}\downarrow }}\,+2NaCl\] \[Sn{{(OH)}_{2}}+2NaOH\xrightarrow{{}}\underset{sodium\text{ }stannite}{\mathop{N{{a}_{2}}Sn{{O}_{2}}}}\,\]
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