2 (a) (i) Describe how you would make a solution of sodium chloride from sodium chloride crystals and distilled water. (ii) A test for chloride ions is carried out on the sodium chloride solution. P, Q, R and S are involved in tests for ions. P add silver nitrate solution to the solution Q a white precipitate forms R add sodium hydroxide solution to the solution S add dilute nitric acid to the solution Only three of these form part of the test for chloride ions. Identify the three and place them in the order they occur in the test. (b) The test for ammonium ions is add sodium hydroxide solution to a solution of the salt. warm the mixture test the ammonia gas given off with damp red litmus paper. (i) Choose the formula of sodium hydroxide. Put a cross (X) in the box next to your answer. A KOH B NaO C NaOH D SOH (ii) Complete the sentence by putting a cross (X) in the box next to your answer. When the ammonia gas is tested with damp red litmus paper, the litmus paper turns blue. This shows that the ammonia gas is A acidic B alkaline C neutral D an indicator (c) Two tests are carried out on a solid. In a flame test, a yellow flame is seen. When some dilute hydrochloric acid is added to the solid, a gas is evolved. The gas turns limewater milky. Give the name of the solid.

GCSE Edexcel Chemistry Tests for anions: 2 (a) (i) Describe how you would

2 (a) (i) Describe how you would make a solution of sodium chloride from sodium chloride crystals and distilled water - Edexcel - GCSE Chemistry - Question 2 - 2016 - Paper 1

Question 2

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2 (a) (i) Describe how you would make a solution of sodium chloride from sodium chloride crystals and distilled water. (ii) A test for chloride ions is carried out ... show full transcript

Worked Solution & Example Answer:2 (a) (i) Describe how you would make a solution of sodium chloride from sodium chloride crystals and distilled water - Edexcel - GCSE Chemistry - Question 2 - 2016 - Paper 1

Step 1

Describe how you would make a solution of sodium chloride from sodium chloride crystals and distilled water.

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Answer

To prepare a solution of sodium chloride, you would add sodium chloride crystals to distilled water. You can either dissolve the crystals by stirring the mixture in a suitable container, such as a test tube or a beaker.

Step 2

A test for chloride ions is carried out on the sodium chloride solution.

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Answer

The three steps in order for testing chloride ions are:

P: Add silver nitrate solution to the solution.
Q: A white precipitate forms.
R: Add dilute nitric acid to the solution.

Step 3

Choose the formula of sodium hydroxide.

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Answer

The correct formula of sodium hydroxide is C NaOH.

Step 4

Complete the sentence by putting a cross (X) in the box next to your answer.

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Answer

The ammonia gas is B alkaline.

Step 5

Give the name of the solid.

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Answer

The solid is sodium carbonate.

2 (a) (i) Describe how you would make a solution of sodium chloride from sodium chloride crystals and distilled water - Edexcel - GCSE Chemistry - Question 2 - 2016 - Paper 1

Worked Solution & Example Answer:2 (a) (i) Describe how you would make a solution of sodium chloride from sodium chloride crystals and distilled water - Edexcel - GCSE Chemistry - Question 2 - 2016 - Paper 1

Describe how you would make a solution of sodium chloride from sodium chloride crystals and distilled water.

A test for chloride ions is carried out on the sodium chloride solution.

Choose the formula of sodium hydroxide.

Complete the sentence by putting a cross (X) in the box next to your answer.

Give the name of the solid.

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