Question

what type of reaction is the following: 8nahco₃ -> na₂co₃ + co₂ + h₂o
single replacement double replacement decomposition combustion combination

Explanation:

A decomposition reaction is when a single compound breaks down into two or more simpler substances. The reaction \( 2\text{NaHCO}_3
ightarrow \text{Na}_2\text{CO}_3 + \text{CO}_2 + \text{H}_2\text{O} \) (note: the original equation had a typo, corrected the coefficient of \(\text{NaHCO}_3\)) shows sodium bicarbonate breaking into sodium carbonate, carbon dioxide, and water. Single replacement involves one element replacing another, double replacement involves two compounds exchanging ions, combustion involves reacting with oxygen (usually producing \(\text{CO}_2\) and \(\text{H}_2\text{O}\) from a hydrocarbon), and combination is two or more substances forming one. So this is a decomposition reaction.

Answer:

Decomposition (the option labeled "Decomposition" among the choices)