Dilute Na₂SO₄ + Alizarine Red Solution

A glass flask about 25% full of clear liquid with solid precipitate around the bottom edge. The label reads "sodium sulfate dilute for electrolysis of H2O".

Details

9DD100 - Chemicals & Fluids

Demo use only

Instances

Instance #288

G2B20A - Demo West (Duane Physics)

Good - Normal Wear Demo use only

Used in these demonstrations

Hofmann electrolysis apparatus on a stand with graduated glass tubes showing yellow-green and violet solutions, connected via red and black leads to a Heathkit IP-32 power supply, with a bottle of sodium sulfate solution on the right

Electrolysis of Water (Hofmann Apparatus)

Electrolyzes water into hydrogen and oxygen using a Hofmann apparatus. Students observe the 2:1 volume ratio of H₂ to O₂ and pH-indicator color changes that reveal the different chemical environments …

Three views of the projection electrolysis apparatus: projected image showing gas collection chambers with electrodes (top left), full setup with horizontal projector and battery eliminator (top right), and close-up of cell mounted on projector (bottom)

Electrolysis of Water (Projection)

Projects the electrolysis of water onto a screen so the entire lecture hall can observe gas collection. Students see the 2:1 volume ratio of hydrogen to oxygen develop in real …

Reserve This Equipment

Demo use only

This equipment supports lecture demonstrations and cannot be reserved directly — it is assigned automatically as part of a demonstration. To use it, request a demo that includes it.