Take finely powdered Zinc and allow it to react with CuSO4 solution. Then take Zinc granules and carry out the same reaction. Which reaction will take place faster and why?

i.                     The reaction between powdered zinc and copper sulphate solution is faster than that between zinc granules and copper sulphate solution.

ii.                    This is because one of the factors that control the rate of reaction is the size of the particles. The smaller the particles, the faster s the reaction.

iii.           Zinc granules are larger than powdered zinc. Hence, the rate of reaction is faster when powdered zinc is used.