Chemistry, 11.10.2021 16:10 smolemily

A student measures the melting point of an unknown solid to be 167.5 - 170°C. She thinks she either has mannitol or tartaric acid which have the literature melting point ranges shown
below.
MP of Mannitol 167 - 170 °C
MP of Tartartic Acid 168-170 °C
ont 2
She makes a 50/50 mixture of her unknown with mannitol and another 50/50 mixture with
tartartic acid. She measures the melting points of her mixtures as shown below. Is her
unknown mannitol or tartaric acid? Explain your reasoning.
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MP of 50/50 mixture of unknown with mannitol 167.6 - 170.0 °C
MP of 50/50 mixture of unknown with tartaric acid 143.2 - 154.8 °C

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A student measures the melting point of an unknown solid to be 167.5 - 170°C. She thinks she eith...