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When the substance ‘A’ is added to a solution of BaSO4, a yellow precipitate is formed. - Science and Technology 1

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When the substance ‘A’ is added to a solution of BaSO4, a yellow precipitate is formed.

  1. What do you think substance A is likely to be?
  2. Name the precipitate.
  3. Which type of reaction is this?
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Solution

(a) The substance 'A' is potassium chromate (K2Cr07

(b) The name of the yellow precipitate is barium chromate (BaCr04).

(c) The type of chemical reaction is double displacement.

Concept: Types of Chemical Change or Chemical Reaction - Double Displacement Reaction
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