: Effect of heat hydrated copper (II) sulphate and subsequent addition of water to the anhydrous product.
Gabriela Soto
Investigation #9
- Observations for PART A: Effect of heat hydrated copper (II) sulphate and subsequent addition of water to the anhydrous product.
CuSO4 + 5H2O ←→ CuSO4 + 5H2O
At first the color of hydrated copper (II) sulphate was blue when it was hydrated but after we burn it, the color turn into white because the water was evaporated when we heat it. At this moment the equilibrium shit to the left because the increase in temperature (from 20°C to 39°C) pushes the system away from equilibrium and in order to restore equilibrium is need to remove some of this additional heat. Le Châtelier's Principle states that the system will react to remove the added heat, thus the reaction must proceed in the reverse direction: This is an endothermic reaction.