Which one of the following quantities is generally not obtainable from a single heating or cooling curve of a substance, measure

Question

professor190 [17]

4 years ago

12

Which one of the following quantities is generally not obtainable from a single heating or cooling curve of a substance, measure

d at atmospheric pressure?
A. melting point
B. boiling point
C. triple point
D. heat of fusion
E. heat of vaporization

Chemistry

1 answer:

Keith_Richards [23] · Answer 1 · 2022-01-23T19:53:46+03:00

Answer:

C. triple point

Explanation:

It is rare for a substance to have a triple point at 1 atm, so you can't measure it if you are limited to 1 atm.

It's easy to measure the melting point and boiling point, because they are the horizontal portions of the curve.

If you are adding heat at a constant rate, you can determine the heats of fusion and vaporization by measuring the times it takes for the substance to completely melt or vaporize.