S Block Elements Question 114
Question: $ ZnCl_2+NaHCO_3\xrightarrow{Heat}(A)\xrightarrow{Heat} $ $ (B)+(C)H_2O(B)+NaOH\to (D) $ Identify the compound (D) present in the solution.
Options:
A) $ ZnCO_3 $
B) $ Zn{{(OH)}_2} $
C) $ ZnO $
D) $ Na_2ZnO_2 $
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Answer:
Correct Answer: D
Solution:
[d] $ ZnCl_2+2NaHCO_3\xrightarrow{\Delta } $ $ Zn\underset{[A]}{\mathop{{{( HCO_3 )}_2}}}+2NaCl $
$ Zn\underset{[A]}{\mathop{{{( HCO_3 )}_2}}}\xrightarrow{\Delta } $ $ \underset{[B]}{\mathop{ZnCO_3}}+H_2O+\underset{[C]}{\mathop{CO_2}}\uparrow $
$ \underset{[B]}{\mathop{ZnCO_3}}+2NaOH\to \underset{[D]}{\mathop{Na_2ZnO_2}}+2H_2O $
BETA
