Explain the observed melting point range of a solid

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1) Suppose that the observed melting point range of a solid was originally 150-160 °C, but this became 145-145.5 °C after recrystallization. How might you account for this observation?

2) For the following melting points, indicate what might be concluded regarding the purity of the sample:

a) 120-122 °C

b) 147 °C

c) 46-60°C

d) 162.5-163.5 °C

Reference no: EM13268634

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