Discussion
Differential scanning calorimetry involves measurement of
Answer: C
Differential scanning calorimetry measures heat.
In DSC the sample and an inert reference are heated or cooled on the same temperature programme, and the instrument records the difference in heat flow needed to keep them at the same temperature. Peaks and steps in that heat flow reveal melting, crystallization, glass transitions and reaction enthalpies.
Weight change is measured by thermogravimetric analysis (TGA). Entropy is not measured directly, though it can be derived from DSC enthalpies. Vapour pressure needs a different apparatus, such as an isoteniscope or effusion cell.
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