What effect would each of the following have on a sample\'sobserved melting-poin

Question

What effect would each of the following have on a sample'sobserved melting-point range ? a.use of a thick-walled melthing point tube b.rapid heating c.use of so much sample that the filled portion of thecapillary tube extents considerably beyond the thermometerbulb d.poor circulation of the heating bath liquid. #2 melting point ranges ordinarily are determined in glassapparatus. This means that the glass constitutes an impurity in thesystem. Why does the glass have no noticeable effect on themelting-point ranges? What effect would each of the following have on a sample'sobserved melting-point range ? a.use of a thick-walled melthing point tube b.rapid heating c.use of so much sample that the filled portion of thecapillary tube extents considerably beyond the thermometerbulb d.poor circulation of the heating bath liquid. #2 melting point ranges ordinarily are determined in glassapparatus. This means that the glass constitutes an impurity in thesystem. Why does the glass have no noticeable effect on themelting-point ranges?

Explanation / Answer

a. A thick-walled tube will delay the observed melting-point. b. Rapid heating will introduce some irregularity to the range, butthe melting-point will not change. c. Nothing will change. #2 The glass is considered as part of the system beingmeasured.

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