Question

When zinc or aluminum was allowed to react with the copper sulfate , what was the limiting reagen?

Answer 1

Usually it is the CuSO4 that is the limiting reagent. 

if all of the color of the solution was gone, but there was still some zinc metal mixed in with the copper metal produced, then Zn is the excess reagent 

f all of the color of the solution was not gone, but there was no zinc metal left in with the blue copper solution , then Zn is the limiting reagent Hope this helps.