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Questions and Answers
What is the purpose of introducing a tiny amount of an organic solid into a small capillary tube and attaching it to a thermometer in a heating bath?
What is the purpose of introducing a tiny amount of an organic solid into a small capillary tube and attaching it to a thermometer in a heating bath?
- To determine the boiling point of the sample
- To determine the molecular weight of the sample
- To determine the melting point of the sample (correct)
- To determine the density of the sample
How do impurities affect the melting point of a sample?
How do impurities affect the melting point of a sample?
- They cause the sample to have a higher melting point and a wider range
- They cause the sample to have a lower melting point and a narrower range
- They have no effect on the melting point of the sample
- They cause the sample to have a lower melting point and a wider range (correct)
What is the range of melting points for a pure sample of an organic solid?
What is the range of melting points for a pure sample of an organic solid?
- 149.5-150 oC (correct)
- 145-148 oC
- 186-189 oC
- 190-192 oC
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