Final answer:
Each chemical reaction provided can be categorized into a type such as synthesis, decomposition, or single displacement, though none perfectly fits a double displacement or combustion type from the examples given.
Step-by-step explanation:
To match each chemical reaction with the type of reaction that best describes it, we first need to understand the different types. Here's how we can categorize them:
Synthesis: Occurs when two or more reactants combine to form a single product. For example, Ca + Br2 → CaBr2 is a synthesis reaction where calcium and bromine combine to form calcium bromide.
Decomposition: A single compound breaks down into two or more simpler products. The reaction 2NaCl → 2Na + Cl2 is a decomposition reaction as sodium chloride decomposes into sodium and chlorine.
Single Displacement: One element replaces another in a compound. For example, FeS + 2HCl → FeCl2 + H2S is a single displacement reaction where iron replaces hydrogen in hydrogen chloride.
Double Displacement: The anions and cations of two different compounds switch places, forming two new compounds. This does not apply to any of the examples given.
Combustion: Typically involves the reaction of a substance with oxygen to produce an oxide and energy. However, none of the reactions provided is a combustion reaction.
Therefore, the matches are as follows: 2Al + 6HCl → 2AlCl3 + 3H2 (Single Displacement), Ca + Br2 → CaBr2 (Synthesis), 4NH3 + 5O2 → 4NO + 6H2O (Not perfectly fitting into the categories provided, though it may seem like a form of combustion as it involves oxygen), and 2NaCl → 2Na + Cl2 (Decomposition).