Which aluminum sample would react most rapidly with 1 M CuSO4 solution under the same conditions?

Explanation

Option D, 1 g of Al powder, would react most rapidly with 1 M CuSO4 solution under the same conditions. This is because the rate of a chemical reaction can be influenced by the surface area of the reactants. Finely powdered substances have a larger surface area compared to rods, pellets, or ribbons of the same mass. This increased surface area allows for more frequent and effective collisions between the particles of the reactants, which can lead to a faster reaction. In the case of option D, the Al powder provides the largest surface area, making it more reactive and likely to react rapidly with the CuSO4 solution. The other options (Al rod, pellets, and ribbon) have less surface area, which would result in a slower reaction.