Write balanced chemical equations for the following reactions.
a. Zinc with steam. b. Calcium with water.
c. Iron with steam. d. Aluminium with steam
Arrange the metals in the decreasing order of reactivity.
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Sodium carbonate is a very stable carbonate,resisting decomposition upto a very high temperature,often till its melting temperature.
Na(HCO
3
)→Na
2
CO
3
+CO
2
+H
2
O
Sodium carbonate do not decompose.
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