Question

If

test tube 1: 2 grams KNO3
test tube 2: 4 grams KNO3
test tube 3: 6 grams KNO3
test tube 4: 8 grams KNO3

Why would test test tube #1 take longer to recrystallize?

Answer 1

crystallization does not occur until concentration is great, so the most dilute (testtube1) will take longer.