Answer: The correct answer is Option C.
Explanation:
Synthesis reaction is defined as the chemical reaction in which two substances combine their elemental state to form a single compound.
The general chemical equation representing this reaction follows:
\(A+B\rightarrow AB\)
For the given options:
Option A: \(AgNO_3+HCl\rightarrow AgCl+HNO_3\)
This reaction is a double displacement reaction because here exchange of ions takes place.
Option B: \(Zn+2HCl\rightarrow ZnCl_2+H_2\)
This reaction is a single displacement reaction because here more reactive metal displaces a less reactive metal.
Option C: \(N_2+3H_2\rightarrow 2NH_3\)
This reaction is a synthesis reaction because here, hydrogen and nitrogen gases are reacting to form a single compound ammonia.
Option D: \(2KClO_3\rightarrow 2KCl+3O_2\)
This reaction is a decomposition reaction because here one substance is producing two smaller products.
Thus, the correct answer is Option C.
