Chemistry - Rates of Reaction Experiments

Warm Methanol

catalysed using a hot coil of platinum wire

→ wire glows red hot and causes an explosion every few minutes

→ oxidised

Potassium Sodium Tartrate

catalysed by pink cobalt (ii) salts in its reaction with hydrogen peroxide

Cobalt (ii) Salts

catalyst in reaction between potassium sodium tartrate and hydrogen peroxide

Pink → Green → Pink

colour changes in reaction between potassium sodium tartrate and hydrogen peroxide

Manganese Dioxide

used as a catalyst when monitoring the rate of O₂ production from hydrogen peroxide

Hydrogen Peroxide

catalysed with manganese dioxide

Sodium Thiosulfate

reacts with hydrochloric acid

Hydrochloric Acid

added to sodium thiosulfate

Sulphur Precipitate

yellow

forms in reaction between sodium thiosulfate and hydrochloric acid