GCSE Chemistry - Separate Chemistry - 3 - Exam Style Questions with Answers

Created on February 08, 2023 By

paruppts12

GCSE_EDE_CHE_5_SEPARATE_3

1 / 9

Nitric acid can be titrated with a solution of ammonia
What salt is formed in this reaction?

ammonia nitrate

ammonia nitric

ammonium nitrate

ammonium nitric

2 / 9

A higher pressure would increase the chance of explosions occurring

A higher pressure requires more expensive safety equipment

A higher pressure would make the reaction occur too quickly

200 atmospheres still gives an acceptable yield in an acceptable time

3 / 9

State the meaning of the ↔ symbol in the equation.

Reversible

Dynamic equilibrium

Both B and C

Irreversible

4 / 9

Many fertilisers are produced using ammonia.
Ammonia is produced on an industrial scale from the reaction of nitrogen with hydrogen.
The equation for the reaction is
Nitrogen + Hydrogen ↔ Ammonia
State the name of this industrial process.

Contact process

Haber process

Internal process

External process

5 / 9

A

D

B

C

6 / 9

When hydrogen is removed from an alkane, an alkene is formed.
This is an example of a dehydrogenation reaction.
Under certain conditions the dehydrogenation of propane forms propene and a dynamic
equilibrium is reached.
State what is meant by dynamic in this context…………..

Both forward and backward reaction occur

Either forward or back ward reaction occur

Backward reaction only occur

Forward reaction only occur

7 / 9

Figure 1 shows a bag of NPK fertiliser.
N, P and K are the symbols of three elements that are essential for plant growth.
N is the symbol for nitrogen.
Name the other two elements, P and K, that are essential for plant growth.
You may want to refer to the periodic table.

P ......................................
K ......................................

p= phosphorous ; K= platinum

P = phosphorous; K= potassium

P= Platinum; K = krypton

P= palladium ; K= phosphorous

8 / 9

Ammonium sulphate can be made by a laboratory preparation or an industrial process.
Which of the following statements is not a correct difference between the laboratory preparation and the industrial process?

The industrial process is on a much larger scale than the laboratory preparation

The laboratory preparation involves titration and crystallisation steps

Ammonia is used as a gas in the industrial process and as a solution in the laboratory preparation

The industrial process is a batch process

9 / 9

2,2,1

1,2,1

2,1,2

2,1,1

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