Write a balanced molecular equation for the reaction between solid aluminum hydroxide and a solution of hydrobromic acid. Include the state of each species.

Al(OH)₃(aq) + 3 HBr(aq) ⇒ AlBr₃(aq) + 3 H₂O(l)

Explanation:

Let's consider the unbalanced equation for the reaction between solid aluminum hydroxide and a solution of hydrobromic acid. This is a neutralization reaction so it forms a salt, aluminum bromide, and water.

Al(OH)₃(aq) + HBr(aq) ⇒ AlBr₃(aq) + H₂O(l)

We start balancing Br atoms by multiplying HBr by 3.

Al(OH)₃(aq) + 3 HBr(aq) ⇒ AlBr₃(aq) + H₂O(l)

To get the balanced equation, we must multiply H₂O by 3 as well.

Al(OH)₃(aq) + 3 HBr(aq) ⇒ AlBr₃(aq) + 3 H₂O(l)