Question

17. State the condition under which the following metals react with water. Write equation for each reaction. a. Na b. Mg c. Fe

Answer 1

Answer:

a. Na reacts with cold water

               2Na + 2H2O  → 2NaOH  + H2  

b. Mg reacts with hot water

Mg  + 2H2O  → Mg(OH)2  + H2

c. Fe reacts with steam

3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g)  

Answer 2

a. 2Na+H2O = 2NaoH

b. Mg+H2O = Mg(OH)2

c. Fe +H20 = Fe(OH)3