Question

Write chemical equations for the following word equation and balance them.​

f) Sodium reacts with water to form sodium hydroxide and hydrogen.​

Answer 1

Chemical equation:
$\text{Na}+{\text{H}}_2\text{O}\to \text{NaOH}+{\text{H}}_2$

• To equalize hydrogen, multiply ${\text{H}}_2\text{O}$ and $\text{NaOH}$ by 2 .

$\text{Na}+2{\text{H}}_2\text{O}\to 2\text{NaOH}+{\text{H}}_2$

• To equalize Na, multiply it by $2.$

$\text{Na}+2{\text{H}}_2\text{O}\to 2\text{NaOH}+{\text{H}}_2$

The equation is balanced.