Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

3/4 Chemistry. > 8b > Flashcards

8b Flashcards

You may prefer our related Brainscape-certified flashcards:
Chemistry 101 flashcards WSET ® Level 4 D2 Business of Wine flashcards AP® Chemistry flashcards Periodic Table flashcards Organic Chemistry 101 flashcards
1
Q

Percentage yield equation

A

Actual yield/theoretical yield x 100= percentage yield

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is a first generation biofuel feedstock source

A

edible crops, such as corn, wheat, sugarcane, and soybean

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is a first generation biofuel production technology

A

transesterification under alkaline conditions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

considerations of first gen biofuels

A

displacement of food crops and deforestation

competes with valuable food sources

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

second generation biofuel feedstock source

A

non-food crops and waste materials, such agricultural residues, forest residues, and household waste

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

second gen biofuel production technology

A

transesterification under alkaline conditions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

second gen biofuel considerations

A

lower environmental impact than first generation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

third gen biofuel feedstock source

A

algae and other microbes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

third gen biofuel production technology

A

can be grown in various environments, such as wastewater, saltwater and freshwater

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

third gen biofuel considerations

A

high productivity and potential to absorb carbon dioxide from the atmosphere

requires extensive processing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

fourth gen(emerging ) biofuel feedstock source

A

cyanobacteria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

fourth gen(emerging) production technology

A

engineered cyanobacterial development

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

fourth gen (emerging) considerations

A

huge potential for use as a green biotechnology

absorbs the most CO2 and creates lipid biofuel

currently very expensive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

5 benefits of catalysts in green chemistry

A

improved selectivity
lower energy consumption
renewable source utilisation
safer reactions
longer catalyst lifetime

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is improved selectivity

A

greater specificity of reactions, hence unwanted by-products are minimised or eliminated.

reduces waste and saves money by improving yield of desired product

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is lower energy consumption

A

because of catalyst the reaction can occur at lower temp and hence lower energy consumption

17
Q

what is renewable source utilisation

A

catalysis can facilitate the use of renewable sources such as biomass instead of fossil fuels

18
Q

what is safer reactions

A

can use less hazardous reagents because of catalyst hence safer

19
Q

what is longer catalyst lifetime

A

catalysts can often be re used hence increases lifetime and less impact on enviro

20
Q

seaweed benefits as biopolymer

A

lower carbon footprint
quick grow
biodegradable
increase durability
reduced food waste
production of oxygen by consuming CO2
edible

3/4 Chemistry. (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions