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:
[tex]A+B\rightarrow AB[/tex]
For the given options:
Option A: [tex]AgNO_3+HCl\rightarrow AgCl+HNO_3[/tex]
This reaction is a double displacement reaction because here exchange of ions takes place.
Option B: [tex]Zn+2HCl\rightarrow ZnCl_2+H_2[/tex]
This reaction is a single displacement reaction because here more reactive metal displaces a less reactive metal.
Option C: [tex]N_2+3H_2\rightarrow 2NH_3[/tex]
This reaction is a synthesis reaction because here, hydrogen and nitrogen gases are reacting to form a single compound ammonia.
Option D: [tex]2KClO_3\rightarrow 2KCl+3O_2[/tex]
This reaction is a decomposition reaction because here one substance is producing two smaller products.
Thus, the correct answer is Option C.
