CHEMICAL PROCESSING
CHAPTER 2 WORKSHEET
Answer all the Class Exercises (except those answered below).
clarifications/revisions are provided.
Some hints and
Exercise 2.1 (revision)
Give ONE reason why materials in a chemical manufacturing process would need to be
heated.
Give ONE reason why materials in a chemical manufacturing process would need to be
cooled.
2.3 (hint) Think about the thermometer when you carry out a distillation.
2.4(b) (hint) Energy is equal to power (in watts) multiplied by time (in seconds).
Example 2.1(B) (answer)
In this analogy, conduction would occur by the ball being handed from one person to the
next.
Exercise 2.12 (b) (answer)
The boiling point of the refrigerant liquid.
The following websites might help you understand further how heat exchangers and
refrigerators work.
http://www.explainthatstuff.com/refrigerator.html
http://www.explainthatstuff.com/how-heat-exchangers-work.html