Question
We did a recrystallization lab and I gave the information on the two unknowns in the questions but I need help with my answers. Recrystallization
We did a recrystallization lab and I gave the information on the two unknowns in the questions but I need help with my answers.
Recrystallization lab the four unknown options are
Benzoic acid 67g/L hot water
Vanillin 68g/L hot water
Phthalic acid 180g/L hot water
Salicylic acid 68g/L hot water
Question 1 Identify unknown 1 and briefly explain how you reached your conclusion (5 marks)
Initial weight 0.163g
Recrystallized at 0.152g
Melted at 81C
Question 2 Identify unknown 2 and briefly explain how you reached your conclusion (5 marks)
Initial weight 0.149 g
Weight after recrystallization 0.101g
Vanillin since there is no detectable odor we can rule out vanillin
Melting point 125.6C Melting point temperature is near Benzoic acid, so the unknown is benzoic acid?
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