Sodium acetate is a common example used in general chemistry lectures to illustrate the idea of supersaturation, and that precipitation of a supersaturated solution can be initiated by a seed crystal. It makes a great demo, and there are many excellent videos online that illustrate this phenomenon.
My question is: What is it about sodium acetate that makes it so well-suited to this particular demonstration? Is there an explanation from experiment, theory, or simulation that explains why sodium acetate is better than, say, sodium chloride? (Or perhaps potassium acetate? though that may be a cost issue.)