GCSE Edexcel Chemistry Ionic bonding: The table shows some information

Question

The table shows some information about the atoms and the ions of chlorine and sodium.

Complete the table.

| symbol of         |     | number of electrons in |
| atom             | ion | atom                  | ion |
| ---------------- | --- | --------------------- | --- |
| chlorine         | Cl  |                       | Cl⁻ |
| sodium           | Na  |                       | Na⁺ |

When silver nitrate solution, AgNO₃, is added to sodium chloride solution a white precipitate is formed.

(i) Write the balanced equation for this reaction.

(ii) Silver nitrate solution can be added to a solution to test for the presence of chloride ions.
In this test, dilute nitric acid is added to the solution, followed by the silver nitrate solution.
A white precipitate shows the presence of chloride ions.
Why must the dilute nitric acid be added to make this a reliable test?
Put a cross (X) in the box next to your answer.

The table shows some information about the atoms and the ions of chlorine and sodium - Edexcel - GCSE Chemistry - Question 6 - 2012 - Paper 1

Worked Solution & Example Answer:The table shows some information about the atoms and the ions of chlorine and sodium - Edexcel - GCSE Chemistry - Question 6 - 2012 - Paper 1

Complete the table.

Write the balanced equation for this reaction.

Why must the dilute nitric acid be added to make this a reliable test?

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