Question

5
identify the reaction type: * (0.5 points)
what type of chemical reaction is this one?
al(oh)₃ --> al₂o₃ + h₂o
combustion
double replacement
decomposition
single replacement
synthesis

Explanation:

To identify the reaction type, we analyze the given reaction: $\ce{Al(OH)3 -> Al2O3 + H2O}$. A decomposition reaction is defined as a reaction where a single compound breaks down into two or more simpler substances. Here, aluminum hydroxide ($\ce{Al(OH)3}$) is breaking down into aluminum oxide ($\ce{Al2O3}$) and water ($\ce{H2O}$), which fits the definition of a decomposition reaction. Combustion involves reacting with oxygen, double replacement involves two compounds exchanging ions, single replacement involves one element replacing another in a compound, and synthesis involves combining substances into a single compound—none of these match this reaction.

Answer:

C. Decomposition