Which is the faster reaction?

Explanation

Option C, "AgNO3 + NaCl," is the fastest reaction among the given options. This is because it involves a direct combination of two ionic compounds, silver nitrate (AgNO3) and sodium chloride (NaCl), resulting in the formation of silver chloride (AgCl) and sodium nitrate (NaNO3). This reaction proceeds rapidly due to the strong electrostatic attraction between the positively charged silver ions (Ag+) and the negatively charged chloride ions (Cl-), leading to a high reaction rate. In contrast, the other options involve covalent compounds or more complex reactions, which typically have higher activation energies and may proceed at a slower rate compared to the straightforward ionic reaction in option C.