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...d. But as far as comparing the observed Mel-temp melting points to the actual melting points, there was a big difference between the values observed and the real melting point values. The Mel-temp temperatures for benzoic acid and naphthalene were 85-95 °C and 55-62 °C, respectively. The actual values of temperature for benzoic acid and naphthalene were122.4°C and 80.2°C, respectively. This showed that the “pure” samples were still impure in some way. It seemed as though maybe not enough vacuum filtration and drying time were causations of impure samples, probably tainted by water. The crude sample Mel-temp temperature was 55-63 °C. This showed that the naphthalene sample was very off from it’s actual value, probably still very crude, while the benzoic acid melting temperature was above the crude sample melting temperate, but still very below what it should have been.
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