Question

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Answer 1

a)The colour of the precipitate formed is yellow.

b)The precipitate is Barium Chromate.

c)The type of chemical reaction is Double Displacement and Precipitation.

Precipitation  is the the reaction in which two soluble salt solutions react and undergo decomposition such that their radicals are exchanged and an insoluble salt called a precipitate is formed which settles down.

d)

K2CrO4 + BaSO4------------> K2SO4   +  BaCrO4↓(precipitate)

This reaction serves as a test for chromate ions and dichromate ions in a basic medium(with NaOH or Koh)

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