The Chemical Industry/ General Concepts

Question 1

What does it mean when something has been left to stand?

Answer 1

It has been oxidized by oxygen

Question 2

What is continuous production?

Answer 2

Reactants are constantly put in and products (which are always in demand) are constantly taken out as

Question 3

What is batch production?

Answer 3

Reactants enter; products are removed; the vessel is cleaned.
This process is repeated as often as necessary

Question 4

What are the advantages of batch production?

Answer 4

MORE COST EFFECTIVE - Smaller quantities made so supply matches demand

Question 5

What are the advantages of continuous production?

Answer 5

LOWER COSTS since the whole process can be automated

Question 6

What are the disadvantages of batch production?

Answer 6

MORE LABOR INTENSIVE - automation isn’t possible

CONTAMINATION if cleaning isn’t good enough

Question 7

What are the disadvantages of continuous production?

Answer 7

MORE EXPENSIVE TO BUILD

MORE EXPENSIVE TO RUN (unless used to max. potential)

Question 8

Is making ethanol industrially an example of batch or continuous production?

Answer 8

CONTINUOUS

Question 9

Is making dyes an example of batch or continuous production?

Answer 9

BATCH

Question 10

Is making ethanol via fermentation an example of batch or continuous production?

Answer 10

BATCH

Question 11

Is the Haber process an example of batch or continuous production?

Answer 11

CONTINUOUS

Question 12

Is making sulphuric acid an example of batch or continuous production?

Answer 12

CONTINUOUS

Question 13

Is making aspirin and paracetamol an example of batch or continuous production?

Answer 13

BATCH

Question 14

What is important about construction materials?

Answer 14

They must NOT be able to react with the FEEDSTOCKS, CATALYSTS, SOLVENTS or PRODUCTS