WARNING! This experiment is dangerous! You should NOT perform this at home. ONLY carry out this experiment, if you are a trained chemist, and you understand local safety and legal requirements, which are required to perform such experiments
- For this experiment we need to obtain chlorine gas. Since it is very hazardous this experiment should be performed only in a fume hood.
- Prepare the following equipment: a graduated cylinder, gas delivery system, stand, and a 250 ml flask. The gas delivery system consists of a rubber stopper, short glass tube, flexible connection and J-shaped long glass tube. The length of the J-shaped long glass tube should exceed the height of cylinder.
- The required reagents are: household bleach (NaClO), concentrated hydrochloric acid (HCl), water (H2O) and calcium carbide (CaC2).
- Pour about 100 ml of household bleach into the flask.
- Set the flask on the stand.
- Fit the flask with a rubber stopper.
- Fill the cylinder with water.
- Put the J-shaped tube down into the cylinder.
- To generate chlorine add about 10 ml of concentrated hydrochloric acid to the flask with household bleach.
- Chlorine gas will be released from J-shaped tube.
- Add a few pieces of calcium carbide to the cylinder. When it comes in contact with water acetylene is formed.
- The reaction between two gases produce sparks.