Answer:
Solute Temperature before dissolving (°C) Temperature immediately after dissolving (°C) Temperature change (°C)
A potassium chloride 23 10 13
B sodium hydrogencarbonate 23 17 6
C calcium chloride 23 30 -7
D sodium chloride 23 23 0
Based on the given data, the best conclusion is given by Habibah who concluded that solutes A and B take in energy from the surroundings when they dissolve. This conclusion is supported by the fact that the temperature change is positive for solutes A and B, which indicates an endothermic reaction where energy is absorbed from the surroundings. In contrast, the temperature change is negative for solute C, indicating an exothermic reaction where energy is released to the surroundings. The conclusion given by Habibah is more accurate and consistent with the observed data compared to the other conclusions.