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In the manufacture of sodium carbonate, ...

In the manufacture of sodium carbonate, following reactions are involved:
`(A) overset(Delta)rarr (B) + CO_(2)`
`(B) +H_(2)O rarr (C ) overset(+NH_(4)CI rarr (D)overset(+H_(2)O)rarr underset("Solution")(E )`
`(E )+CO_(2)rarr (F)`
`(F)+NaCI rarr (G) overset("Heat")rarr Na_(2)CO_(3)+CO_(2)+H_(2)O`
(D) is a gas which is soluble in `H_(2)O`
(C ) is

A

`NaCl`

B

`NH_(4)Cl`

C

`NH_(4)OH`

D

`NaHCO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
The reactions can be shown as :
`underset((A))(CACO_(3))overset("Heat")tounderset((B))(CaO)+CO_(2)`
`CaO+H_(2)Otounderset((C))(Ca(OH)_(2))` `Ca(OH)_(2)+2NH_(4)C l tounderset((D))(2NH_(3))+CaCl_(2)+2H_(2)O`
`NH_(3)H_(2)Otounderset((E))(NH_(4)OH)`
`NH_(4)OH+CO_(2)tounderset((F))(NH_(4)HCO_(3))`
`NH_(4)HCO_(3)+NaCl tounderset((G))(NaHCO_(3))+underset((H))(NH_(4)Cl)`
`NAHCO_(3)overset("Heat")toNa_(2)CO_(3)+H_(2)O+CO_(2)`
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