Procedure:

  1. Put a piece of zinc in the solution you saved from experiment 6.7, and observe the reaction.
  1. While the reaction is going on, break up the solid from time to time with a stirring rod.
  1. After the zinc has finished reacting, pour off the solution from the remaining solid and wash the solid several times with water to clean off the acid.
  1. Remove the washed solid form the test tube and dry it quickly by pressing it between two layers of paper towel.
  1. Press the scooplua firmly against the paper towel and move it across the dry solid.

  • Can you identify the solid?