In terms of saturation, how would you classify a KBr solution with a concentration of 78 g/100 g of water at 47°C?

Answer 1

Here is a chart I found that lists a plot of solubility of KBr versus T. Perhaps you have the data and just didn't post it.
http://www.thestudentroom.co.uk/showthread.php?t=505138
If the read the graph right, the solubility of KBr at 47 C is abouat 40 g/100 mL; therefore, a solution with 78 g/100 mL would be supersaturated. If you have solubility data, use it to answer the question.