Question

Complete the following chemical reactions :
(a) 3Fe + 4H2O--->
(b) Ca + H2O--->
(c) K + H2O -->

Answer 1

3Fe + 4H2O ----> Fe3O4 + 4H2.......
Ca. + 2H2O. ------> Ca(OH)2 + H2
2K. + 2 H2O. ------> 2KOH. + H2

Answer 2

Complete the following chemical reactions :

All the equations are based on the concept :

Metal + water ---> Metal hydroxide + hydrogen.

The intensity of the reaction depends upon its chemical reactivity.

some metals react vigorously with cold water ,some react with hot water and some metals react with steam.

for example :

the balanced chemical equations are :

a) 3Fe + 4H2O → Fe3O4 + 4H2

(b) Ca + H2O → Ca(OH)2 + H2

(c) K + H2O → 2KOH + H2