A) \[HC{{O}^{-}}_{3}\]
B) \[N{{O}_{3}}^{-}\]
C) \[C{{O}_{3}}^{2-}\]
D) \[S{{O}_{4}}^{2-}\]
Correct Answer: A
Solution :
[a] \[2NaHC{{O}_{3}}+MgC{{l}_{2}}\xrightarrow{Boil}2NaCl+\underset{white\,ppt}{\mathop{Mg{{(C{{O}_{3}})}_{2}}}}\,+{{H}_{2}}O\]
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