Question

give three examples of reaction between metals and water to show that different metals has defferent reactivities

Answer 1

Na+ in presence of cold water gives rise to NaOH+H2O+heat energy

Mg+in presence of hot water gives rise to
Mg(OH)2+H2O+heat energy

Fe+in presence of steam gives rise to
Fe(OH)2+H2O+heat energy

Answer 2

 1) CO3+H2O---> HCO3+OH-
 2) CH3OO+H20--->CH3COOH+OH-
 3) NH4+H20--->NH3+H30