Chemistry Reference
In-Depth Information
good process controls and gradual changes in targeted density, these transition
times and the amount of off-specification material can be minimized.
QUESTIONS
1.
Assuming adipic acid costs 50.0¢ per pound and methanol costs 20.0¢
per pound, and assuming 100% yield, calculate the raw material cost of
dimethyl adipate to the nearest tenth of a cent.
Unbalanced equation:
O
O
O
H
O
CH
3
+H
2
O
+CH
3
OH
H
O
H
3
C
O
O
O
2.
If methanol costs 35.0¢ per pound and terephthalic acid costs 45.0¢
per pound, and assuming 100% yield, what is the raw material cost of
dimethylterephthalate (report your answer to three significant figures)?
3.
Assume that the amount of base and N-acetyl caprolactam used is so
small that it is insignificant in the weight of the polymer and in the
cost. Nylon 6 is a polyamide made by the ring opening of caprolactam
(C
6
H
11
NO) incorporating each of the atoms of caprolactam into the final
polymer. Assuming 100% yield, if the cost of caprolactam is 68.0¢ per
pound, what is the raw material cost of nylon 6 (report your answer to
three significant figures)?
4.
Choose the best answer. Although everyone in an organization has a
responsibility to deliver a quality product, this group preaches quality
throughout the organization and is responsible for training other groups
in quality.
a.
R&D
b.
QC
c.
QA
d.
Manufacturing
e.
QRS
5.
You and Edith work in the R&D group. The plant manager tells Edith that
they are having a problem with variability in the granulation of valproic
acid (Depakote). Production uses a melt granulation method with binding
agents. Edith's specialty is mass spec so she is thinking of running mass
spec on the binding agents. Edith often comes to you for advice. What
would you tell Edith? (Answer in 20 words or less).
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