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Melting point of pure product help needed
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coconut64
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#1
I don't get why the answer is between 49 and 53oC, provided it includes 51oC or 50-52. I know that the pure might contain a little bit of impurities so it will having a sightly lower boiling point. However how can it only be as low as 49? I estimated it could be 45-50 C. Also why can the boiling point of the product be slightly higher than the boiling point of the pure product?
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EierVonSatan
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You are not trying to determine the purity of the sample as you do with measuring the melting point of a solid. You are trying to purify a mixture.
Two degrees either side of the boiling point to collect a fraction of good quality should be ample - then comes the analysis to determine the purity.
Two degrees either side of the boiling point to collect a fraction of good quality should be ample - then comes the analysis to determine the purity.
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coconut64
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#3
(Original post by EierVonSatan)
You are not trying to determine the purity of the sample as you do with measuring the melting point of a solid. You are trying to purify a mixture.
Two degrees either side of the boiling point to collect a fraction of good quality should be ample - then comes the analysis to determine the purity.
You are not trying to determine the purity of the sample as you do with measuring the melting point of a solid. You are trying to purify a mixture.
Two degrees either side of the boiling point to collect a fraction of good quality should be ample - then comes the analysis to determine the purity.
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EierVonSatan
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#4
(Original post by coconut64)
But the solid would have been purified as it has been recrystallized but may contain impurities, I think ? So why does it have to be from 49 - 51 specifically?
But the solid would have been purified as it has been recrystallized but may contain impurities, I think ? So why does it have to be from 49 - 51 specifically?
Give a suitable temperature range over which to collect the final product during the distillation.
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