NPK Fertilisers
0.0(0)
Studied by 0 people0.0(0)
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt PlayCard Sorting
1/13
There's no tags or description
Looks like no tags are added yet.
Study Analytics
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
14 Terms
1
New cards
What are the three salts in NPK fertilisers
Nitrogen, Phosphorus and Potassium
2
New cards
Why may the soil be deficient in nutrients
Used up by previous crops
3
New cards
What does ammonia produce when it is reacted with water and oxygen
Nitric acid
4
New cards
What does ammonia produce when it is reacted with nitric acid
Ammonium nitrate
5
New cards
Why is ammonium nitrate a good compound to use in a fertiliser
Has nitrogen from two sources
6
New cards
What is the formula of an ammonium ion
NH4+
7
New cards
What two potassium salts are mind and used as a source of potassium
Potassium chloride and potassium sulfate
8
New cards
Why can’t the salts phosphate rock be used by plants to acquire nutrients
Because the phosphate salts in the rock are insoluble
9
New cards
What do we react with phosphate rock to produce soluble phosphates
Acids
10
New cards
Phosphate rock + Nitric acid goes to…
Phosphoric acid and calcium nitrate
11
New cards
Phosphate rock + Sulfuric acid goes to…
Calcium sulfate and calcium phosphate
12
New cards
What is the mixture of calcium sulfate and calcium phosphate known as
Single superphosphate
13
New cards
Phosphate rock + Phosphoric acid goes to…
Calcium phosphate
14
New cards
What is calcium phosphate known as
Triple superphosphate
Note 
Flashcards (25)