For a reaction to occur, there should be mobility of ions in reactant side.
If the reactant is larger, its mobility will be lesser than that of smaller ones.
So reactants smaller in size have higher mobility which makes reaction faster.
Hence D is the correct option.
Hope this helps, have a great day/night ahead!
Answer:
I'm pretty sure it's A. BRUSH
Explanation:
If I'm wrong let ne know please
because it a essential for good heat transfer
