Question

Balance the following equation:​

r) $\text{P}+{\text{HNO}}_3\to {\text{NO}}_2+{\text{H}}_2\text{O}+{\text{H}}_3{\text{PO}}_4$

Answer 1

The skeletal equation is:
$\text{P}+{\text{HNO}}_3\to {\text{NO}}_2+{\text{H}}_2\text{O}+{\text{H}}_3{\text{PO}}_4$

• To equalize hydrogen, multiply ${\text{HNO}}_3$ by 5$\text{P}+5{\text{HNO}}_3\to {\text{NO}}_2+{\text{H}}_2\text{O}+{\text{H}}_3{\text{PO}}_4$
  
• To equalize nitrogen and oxygen, multiply ${\text{NO}}_2$ by 5$\text{P}+5{\text{HNO}}_3\to 5{\text{NO}}_2+{\text{H}}_2\text{O}+{\text{H}}_3{\text{PO}}_4$

The equation is balanced.