Containing a Smelly Sulfur Experiment - Periodic Table of Videos

TL;DR

A chemistry professor demonstrates a reaction between sulfur dioxide and hydrogen sulfide using special equipment to contain the smell.

Transcript

they're clearing out this lab and in the cupboards they found some old equipment invented by me and I got so excited I just want to try it out again and it was designed specially for performing experiment in a large lecture theater with smelly gases when there's no fume Hood to extract the smell and where you don't want the audience to run out the ... Read More

Key Insights

• 🎭 Special equipment can be used to perform experiments with smelly gases in a large lecture theater without a fume hood.
• 💛 The reaction between sulfur dioxide and hydrogen sulfide produces solid sulfur, which has a yellow color.
• 🧑‍🏭 Sulfur dioxide can act as an oxidizing agent, contrary to its usual role as a reducing agent.
• 🧘 Video demonstrations can be edited to remove waiting time, making them more engaging.
• 🫢 Sulfur dioxide and hydrogen sulfide are both unpleasant-smelling gases.
• 😎 The special equipment used in the experiment consists of measuring cylinders with ground glass joints.
• 💦 The reaction between sulfur dioxide and hydrogen sulfide occurs in water.

Questions & Answers

Q: What is the purpose of the special equipment used in the experiment?

The special equipment is designed to contain the smell of the smelly gases, sulfur dioxide, and hydrogen sulfide, allowing the experiment to be performed in a large lecture theater without a fume hood.

Q: What happens during the reaction between sulfur dioxide and hydrogen sulfide?

In the reaction, the hydrogen from hydrogen sulfide reacts with the oxygen of sulfur dioxide to form water and finely divided solid sulfur, giving the solution a yellow color.

Q: Why is sulfur dioxide usually considered a reducing agent?

Sulfur dioxide is generally considered a reducing agent because it can donate electrons to other substances. However, in the reaction with hydrogen sulfide, sulfur dioxide acts as an oxidizing agent.

Q: What is the advantage of using video demonstrations instead of live ones?

Video demonstrations allow for the waiting time required for the sulfur to reach its maximum color to be edited out, making the demonstration more engaging for viewers.

Summary & Key Takeaways

• The professor uses special equipment to demonstrate a reaction between sulfur dioxide and hydrogen sulfide in a large lecture theater without a fume hood.

• The reaction produces a yellow color due to the formation of finely divided solid sulfur, which does not dissolve in water.

• The demonstration shows that sulfur dioxide can act as an oxidizing agent, contrary to its usual role as a reducing agent.