Brainscape's Knowledge GenomeTM

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


See full index

Chemistry Unit 3 > Fertilisers > Flashcards

Fertilisers Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Chemistry flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
1
Q

What are the essential elements for plant growth?

A

Nitrogen, Phosphorus and Potassium

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

What is the chemical formula for ammonia?

A

NH3

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

What is the only non-metal compound which dissolves to produce an alkaline solution?

A

Ammonia

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

What is the shape of a molecule of ammonia?

A

Trigonal pyramidal

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

What is the chemical formula for Nitric Acid?

A

HNO3

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

What are fertilisers used for?

A

To replace the loss of Nitrogen, Phosphorus and Potassium when crops are harvested

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

What are the two compounds used to produce soluble salts which contain Nitrogen?

A

Ammonia and Nitric Acid

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

What is the Haber process used for?

A

To produce the ammonia required for fertiliser production

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

What is the overall chemical equation that takes place during the Haber process?

A

N2 (g) + 3H2 (g) 🔄 2NH3 (g)

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

What type of catalyst is used during the Haber process?

A

An iron catalyst

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

What is the temperature required during the haber process?

A

Approximately 450°C

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

What is the pressure level required during the Haber process?

A

200 atmospheres

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

What is the starting material for the commercial production of Nitric Acid?

A

The ammonia produced by the Haber process

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

What does the Otswald Process use as starting materials aswell as ammonia?

A

Oxygen and Water

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

What is stage 1 of the Otswald Process?

A

Ammonia reacts with oxygen to produce Nitrogen monoxide. (Uses a platinum catalyst)

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

What is stage 2 of the Otswald Process?

A

Nitrogen monoxide reacts with more oxygen to produce Nitrogen dioxide

17
Q

What is stage 3 of the Otswald Process?

A

Nitrogen dioxide reacts further with oxygen and water to produce Nitric Acid

18
Q

What salt is formed when ammonia and Nitric acid react together?

A

Ammonium nitrate (NH4NO3)

19
Q

Why is ammonium nitrate the perfect substanc to be added to fertilisers?

A

It is a soluble salt containing Nitrogen

Chemistry Unit 3 (6 decks)

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