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
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 c... show full transcript
Worked Solution & Example Answer: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 make a solution of sodium chloride from sodium chloride crystals and distilled water, you should add sodium chloride crystals to distilled water. You can either dissolve the sodium chloride by stirring or shaking the mixture. It is important to use a suitable container, such as a test tube, boiling tube, or beaker.
Step 2
Identify the three and place them in the order they occur in the test.
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Answer
The tests for chloride ions proceed in the following order:
Q - add silver nitrate solution to the solution,
P - 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
When the ammonia gas is tested with damp red litmus paper, the litmus paper turns blue. This shows that the ammonia gas is B: alkaline.
Step 5
Give the name of the solid.
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