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Important compounds: NaOH, Na2CO3, NaHCO3, CaO, CaCO3, plaster of Paris
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Difficulty 1 of 3
sb172
The products formed on heating solid sodium hydrogencarbonate are
A
Na
X
2
CO
X
3
,
CO
X
2
and
H
X
2
O
B
Na
X
2
O
,
CO
X
2
and
H
X
2
C
Na
,
CO
X
2
and
H
X
2
O
D
NaOH
and
CO
X
2
Answer: A
The decomposition is
2
NaHCO
X
3
Na
X
2
CO
X
3
+
CO
X
2
+
H
X
2
O
. Sodium carbonate is thermally stable and stays as the residue.
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