Chapter 3.3 Fertilisers Flashcards Preview

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Flashcards in Chapter 3.3 Fertilisers Deck (7)
1

The three main nutrients that plants require to grow well are

nitrogen, phosphorus and potassium

2

Ammonia (NH3) can be used as a fertilizer and also be used to make

fertilizers

3

The Haber process produces ammonia by combining

nitrogen and hydrogen

4

In the Haber process, elements are converted into ammonia by passing them over an

iron catalyst are a temperature of 400 degrees Celsius and a pressure of 200 atmospheres

5

The Ostwald process involves passing

ammonia and air over a platinum catalyst at 800 degrees Celsius

6

In the Ostwald process the nitrogen monoxide produced combines with

oxygen to from nitrogen dioxide which is converted into nitric acid by dissolving in water.

7

Percentage composition calculations:

percentage composition = mass of element x 100
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formula mass