Question

Write symbolic representation for the following word equation and balance them:

(i) Calcium + Water $\to$ Calcium hydroxide + Hydrogen

Answer 1

Symbolic representation:
$\text{Ca}+{\text{H}}_2\text{O}\to \text{Ca}$$\text{(OH}{)}_2+{\text{H}}_2$

• To equalize H and O, multiply ${\text{H}}_2\text{O}$ by 2 .$\text{Ca}+2{\text{H}}_2\text{O}\to \text{Ca}(\text{OH}{)}_2+{\text{H}}_2$

The equation is balanced.