GCSE Edexcel Chemistry Titrations: 1 (a) Fertilisers are sometimes

Question

1 (a) Fertilisers are sometimes added to soil.

(i) State why fertilisers are added to soil.

(ii) Fertilisers contain compounds of different elements. Three of these elements have the symbols K, N and P. Use the periodic table to state the names of these three elements.

K ______________________
N ______________________
P ______________________

(b) The fertiliser ammonium sulfate may be made by titrating ammonia solution with dilute sulfuric acid. Three pieces of apparatus, P, Q and R, used to measure volumes of liquid are shown in Figure 1.

(i) Give the names of the pieces of apparatus P and Q.

P ______________________
Q ______________________

(ii) In the titration experiment, small volumes of dilute sulfuric acid are added gradually to the ammonia solution in a flask. Give the letter, P, Q or R, of the piece of apparatus in Figure 1 that should be used to add the dilute sulfuric acid.

______________________

(iii) The titration experiment is used to produce a solution of ammonium sulfate. Describe how solid ammonium sulfate should be obtained from this solution.

1 (a) Fertilisers are sometimes added to soil - Edexcel - GCSE Chemistry - Question 1 - 2021 - Paper 1

Worked Solution & Example Answer:1 (a) Fertilisers are sometimes added to soil - Edexcel - GCSE Chemistry - Question 1 - 2021 - Paper 1

State why fertilisers are added to soil.

Use the periodic table to state the names of these three elements.

Give the names of the pieces of apparatus P and Q.

Give the letter, P, Q or R, of the piece of apparatus in Figure 1 that should be used to add the dilute sulfuric acid.

Describe how solid ammonium sulfate should be obtained from this solution.

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