Question

FeBr3 (aq) + NaOH (aq) → FeOH (s) + NaBr3 (aq)

What is wrong with the chemical formula(s) of the product(s) predicted by this student?

Answer 1

The student's predicted chemical equation contains incorrect formulas for the products; it should produce iron (III) hydroxide (Fe(OH)3) as a precipitate, and sodium bromide (NaBr) as an aqueous product.

Step-by-step explanation:

The student's predicted chemical equation has inaccuracies in the formulas of the products. In the reaction between FeBr3 (aq) and NaOH (aq), iron (III) hydroxide (Fe(OH)3) and sodium bromide (NaBr) are formed, not FeOH (s) and NaBr3 (aq). The reaction would be correctly represented as:

FeBr3 (aq) + 3NaOH (aq) → Fe(OH)3 (s) + 3NaBr (aq)

This reaction is an example of a double-replacement reaction where Fe(OH)3 precipitates as a solid because it is insoluble in water, while NaBr remains in solution as it is soluble. The balanced chemical equation is essential to reflect the law of conservation of mass and correct chemical formulas.