Predict the products of the reaction below. That is, complete the right-hand side of the chemical equation. Be sure your equation is balanced.

Question

HBr+Ca(OH)_2->

Answer 1

To predict the products of the reaction between hydrobromic acid (HBr) and calcium hydroxide (Ca(OH)₂), we'll consider a neutralization reaction, where an acid reacts with a base to produce a salt and water.

The balanced chemical equation is:
$$2\text{HBr}+{\text{Ca(OH)}}_2\to {\text{CaBr}}_2+2{\text{H}}_2\text{O}$$

Let's verify the products and the balance:

- HBr is a strong acid, so it dissociates into H⁺ and Br⁻.
- Ca(OH)₂ is a strong base, so it dissociates into Ca²⁺ and OH⁻.
- The H⁺ ions from the HBr will react with the OH⁻ ions from the Ca(OH)₂ to produce water (H₂O).
- The Ca²⁺ ions from the Ca(OH)₂ will react with the Br⁻ ions from the HBr to produce calcium bromide (CaBr₂).

Now, let's balance the equation:

On the reactants side:
- We have 2 HBr, providing 2 H⁺ and 2 Br⁻.
- We have 1 Ca(OH)₂, providing 1 Ca²⁺ and 2 OH⁻.

On the products side:
- We need 2 H⁺ (from HBr) to react with 2 OH⁻ (from Ca(OH)₂) to form 2 H₂O.
- The 1 Ca²⁺ will combine with 2 Br⁻ to form 1 CaBr₂.

Thus, the balanced equation is:
$$2\text{HBr}+{\text{Ca(OH)}}_2\to {\text{CaBr}}_2+2{\text{H}}_2\text{O}$$

No atoms are lost or gained, and the equation is balanced in terms of both the number of atoms and the charge.