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4.2 Identifying the products of chemical reactions

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Question 3

A technician checks a new bottle of white solid labelled potassium iodide before it is given out to a class.

The technician does a flame test on one portion of the solid. A second portion is dissolved in water, and dilute nitric acid and then silver nitrate solution are added.

Which pair of observations shows that the label is correct?

[1]
A

A lilac flame and a yellow precipitate

B

A lilac flame and a cream precipitate

C

A yellow-orange flame and a yellow precipitate

D

A yellow-orange flame and a cream precipitate

Markscheme

4.2 Identifying the products of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /4.2 Identifying the products of chemical reactions

107 exam-style questions on OCR GCSE Chemistry 4.2 Identifying the products of chemical reactions, covering 4.2.1 Tests to identify gases, 4.2.2 Tests for aqueous ions and flame tests, and 4.2.3 Instrumental methods of analysis. Each one has a worked solution and a mark scheme showing where the marks go.

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