About 5 ml each of sodium sulphate and barium chloride solution are taken in
two test tubes separately, later sodium sulphate solution is added slowly to the test
tube containing barium chloride solution.
(i) State your observation.
(ii) Write the chemical equation for the reaction involved.
(iii) Identify the type of the reaction
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Answer:
CaCO
3
→
heat
CaO+CO
2
NH
3
+H
2
O→NH
4
+
+OH
−
Na
+
+Cl
−
+NH
4
+
+OH
−
+CO
2
→Na
+
+HCO
C
−
+NH
4
+
+Cl
−
Na
+
+HCO
3
→NaHCO
3
(as precipitate)
NH
4
+
+Cl
−
→NH
4
Cl (in solution)
2NaHCO
3
→
heat
Na
2
CO
3
+H
2
O+CO
2
2NaCO
3
+10H
2
O→Na
2
CO
3
.10H
2
O
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