The effect of temperature on chemical equilibrium (observation)

Change in the colour of the cobalt(II) chloride solution due to heating and cooling.

01:34

Chemistry

Keywords

balance, chemical equilibrum, temperature, balance shift, water bath, heating, cooling, komplex, experiment, chemical reaction, chemistry

On-screen labels

Ethanolic solution of CoCl₂, Hot water bath (80°C), Cold water bath (20°C), Water (room temperature), Add enough room temperature water to the blue solution so that its colour changes to purple-pink., Place the test tube in the hot water bath., Observe what happens to the solution., Now place the test tube in the cold water bath., Observe how the colour of the solution changes again., What do you think causes the changes in the colour of the solution?