In two or more complete sentences explain how to balance the chemical equation and classify its reaction type.

_H3PO4 + __NaBr __HBr + _Na3PO4

H₃PO₄ + 3NaBr → 3HBr + Na₃PO₄

Double displacement reaction

Explanation:

Chemical equation:

H₃PO₄ + NaBr → HBr + Na₃PO₄

Balanced chemical equation:

H₃PO₄ + 3NaBr → 3HBr + Na₃PO₄

Steps to balance:

H₃PO₄ + NaBr → HBr + Na₃PO₄

H = 3 H = 1

P = 1 P = 1

O = 4 O = 4

Na = 1 Na = 3

Br = 1 Br = 1

We will add the coefficient 3 with NaBr.

H₃PO₄ + 3NaBr → HBr + Na₃PO₄

H = 3 H = 1

P = 1 P = 1

O = 4 O = 4

Na = 3 Na = 3

Br = 3 Br = 1

Now we will add the coefficient 3 with HBr.

H₃PO₄ + 3NaBr → 3HBr + Na₃PO₄

H = 3 H = 3

P = 1 P = 1

O = 4 O = 4

Na = 3 Na = 3

Br = 3 Br = 3

Now equation is completely balanced.

The reaction type is double displacement reaction.

Double replacement:

It is the reaction in which two compound exchange their ions and form new compounds.

AB + CD → AC + BD