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18/12/2021 11:49 am
Topic starter
In the following sequence of reaction, identify the compounds (A), (B) (C) and (D):
Na2CO3 \(\overset{SO_2}{\longrightarrow}\) (A) \(\overset{Na_2CO_3}{\longrightarrow}\) (B) \(\overset{S}{\underset{Heat}{\longrightarrow}}\) (C) \(\overset{AgNO_3}{\longrightarrow}\)(D)
(a) Na2CO3, NaHSO3, Na2S, Ag2S
(b) NaHSO3, Na2CO3, Na2S2O3, Ag2S
(c) NaHSO3, Na2SO4, Na2S, Ag2O
(d) Na2CO3, Na2SO4, Na2S2O3, Ag
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18/12/2021 12:00 pm
Correct answer: (b) NaHSO3, Na2CO3, Na2S2O3, Ag2S
Explanation:
NaHSO3 + 2SO2 + H2O → 2NaHSO3(A) + CO2
2NaHSO3 + Na2CO3 → 2Na2SO3(B) + H2O + CO2
2Na2SO3(B) + S \(\overset{Heat}{\longrightarrow}\) 2Na2S2O3(C)
2Na2S2O3(C) + AgNO3 → Ag2S(D) + H2SO4