Question

3. Write balanced equations when
(a) sodium metal is dropped in cold water.
(b) calcium metal is dropped in cold water
(c) steam is passed over heated magnesium
metal
(d) steam is passed over heated iron metal​

Answer 1

Na2o+H2O=2NaOH

b) Ca+2H2O= Ca(OH)2+H2

c) Mg+2H2O= Mg(OH)2+H2

d)3Fe+4H2O= Fe3O4+4H2

Answer 2

1. 2Na + H2O →→→→ Na2O + H2 ↑

2. 2Cl + H2O →→→→ Cl2O + H2 ↑

3. 2Mg + H2O →→→→→ Mg2O + H2↑

4. 2Fe + H2O →→→→→ Fe2O + H2↑