Final answer:
Without the solubility data or curve for KBr at 60°C, it's not possible to definitively determine if the solution with 12g of KBr in 20ml of H2O is saturated or unsaturated.
The correct answer is none of all.
Step-by-step explanation:
To determine if dissolving 12g of KBr in 20ml of H2O at 60°C results in a saturated or unsaturated solution, we need the solubility data for KBr at 60°C. Typically, a solubility curve can provide this information. If, at 60°C, the solubility of KBr is greater than 12g per 20ml of water, the solution is unsaturated. If the solubility is equal to or less than 12g per 20ml, the solution is saturated. Without the exact solubility data for KBr, we cannot definitively answer this question. Since the information provided does not include a solubility curve for KBr at 60°C, we cannot conclude whether the solution is saturated or unsaturated.