Identifying the products of chemical reactions

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Question 11
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During the reaction of solid sodium bromide with concentrated sulfuric acid, a mixture of gases and vapours is evolved. One of these gaseous products, Gas XXX, is a choking, colourless gas that turns moist blue litmus paper red, and turns a filter paper soaked in acidified potassium dichromate(VI) from orange to green.

Which of the following is Gas XXX?

HBr\text{HBr}HBr

SO2\text{SO}_2SO2​

Br2\text{Br}_2Br2​

H2S\text{H}_2\text{S}H2​S

Identifying the products of chemical reactions Questions

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