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Identifying the products of chemical reactions

Identifying the products of chemical reactions

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Question 4

Solid sodium bromide is reacted with concentrated sulfuric acid. Which option correctly identifies a gaseous reduction product of the sulfuric acid and the chemical test used to confirm its identity?

A

Hydrogen bromide (HBrHBrHBr); turns damp blue litmus paper red.

B

Sulfur dioxide (SO2SO_2SO2​); turns acidified potassium dichromate(VI) paper from orange to green.

C

Hydrogen sulfide (H2SH_2SH2​S); turns damp lead(II) ethanoate paper black.

D

Bromine (Br2Br_2Br2​); turns starch paper blue-black.

Markscheme

Identifying the products of chemical reactions Questions

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

41 exam-style questions on OCR GCSE Chemistry Identifying the products of chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.

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