What type of reaction does the following equation represent?
AgNO3 + NaCl ---> AgCl + NaNO3
A. Single-displacement reaction
B. Synthesis
C. Combustion
D. Double-displacement reaction
To determine the type of reaction represented by the given equation, we need to understand the different types of reactions.
A. Single-displacement reaction: This type of reaction occurs when an element replaces another element in a compound. The general form of a single-displacement reaction is A + BC → AC + B.
B. Synthesis: Synthesis is a reaction in which two or more substances combine to form a single, more complex compound. The general form of a synthesis reaction is A + B → AB.
C. Combustion: Combustion reactions involve the reaction of a substance with oxygen gas, usually resulting in the release of heat and light. The general form of a combustion reaction is A + O2 → CO2 + H2O.
D. Double-displacement reaction: This type of reaction occurs when the positive ion of one compound switches places with the positive ion of another compound. The general form of a double-displacement reaction is AB + CD → AD + CB.
Based on the given equation:
AgNO3 + NaCl ---> AgCl + NaNO3
We can see that the positive ions from the reactants (Ag and Na) have swapped places in the products. Therefore, the given equation represents a double-displacement reaction.
So, the correct answer is D. Double-displacement reaction.