Editing Penny Alchemy (section)

== Safety Precautions ==

Please read the Liquid Chemical section of the [[Demonstration Safety]] page before performing this demonstration.

This demonstration requires: Safety glasses, hot gloves. A small blast shield is recommended, but not required. This demonstration uses a strong basic solution, so follow these steps when disposing of it:
;Disposal:
# Clean the zinc: pour the solution into a separate beaker, being sure that the zinc stays in the first beaker. Once separated, rinse the zinc thoroughly with water, then soak it in vinegar for 10-20 minutes. Rinse it with water, then lay it out on several paper towels and pat dry. This zinc can be reused for the demonstration.
# Neutralize the solution: put a pH meter into the remaining NaOH solution, and titrate vinegar into the solution while stirring until you reach a pH between 6 and 8. A magnetic stir plate is recommended for this process.
# Once neutralized, the solution can be safely poured down a drain. Thoroughly wash the glassware and utensils to remove any residue.