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Identify (A), (B), (C ) and (D) and give...

Identify (A), (B), (C ) and (D) and give their chemical formulate.
`(A)+NaOH overset(Delta)rarr NaCI+NH_(3)+H_(2)O`
`NH_(3)+CO_(2)+H_(2)O rarr (B)`
`(B)+NaCI rarr (C )+NH_(4)CI`
`(C )overset(Delta)rarr Na_(2)CO_(3)+H_(2)O+(D)`

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A overset(Delta)rarrB (oxide) + CO_(2) B + H_(2)O rarr C C+ CO_(2) rarrA (milky) C+ NH_(4)CI overset(Delta)rarr D (gas) D + H_(2)O + CO_(2) rarr E E + NaCI rarr F F overset(Delta)rarr Na_(2)CO_(3)+CO_(2)+H_(2)O A is:

A overset(Delta)rarrB (oxide) + CO_(2) B + H_(2)O rarr C C+ CO_(2) rarrA (milky) C+ NH_(4)CI overset(Delta)rarr D (gas) D + H_(2)O + CO_(2) rarr E E + NaCI rarr F F overset(Delta)rarr Na_(2)CO_(3)+CO_(2)+H_(2)O A is: