An element X reacts with cold water to form the corresponding metal oxide and catches fire. Identify element X
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The salt is NaOH and its molar mass can be calculated as follows:
Na(23)+O(16)+H(1)=23+16+1=40
It is clear that X is sodium, Y is sodium hydroxide and Z is hydrogen. The reaction can be shown by following equation: 2Na+2H
2
O→2NaOH+H
2
+Heat
Hydrogen is a highly inflammable gas and hence it easily catches fire.
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