Water is mixed with anhydrous copper(II) sulfate. Which row shows the direction of energy change and the colour change of the mixture as the reaction takes place?
- Aenergy absorbed from the surroundings; colour change: blue to white
- Benergy absorbed from the surroundings; colour change: white to blue
- Cenergy released to the surroundings; colour change: blue to white
- Denergy released to the surroundings; colour change: white to blue