Write the chemical equation of the reaction with a change in colour​

Explanation:

(i) Change in colour: Reaction between lead nitrate solution and potassium iodide solution. In this reaction, colour changes from colourless to yellow. (ii)Change in temperature: Action of dilute sulphuric acid on zinc. (iii) Formation of precipitate: Action of barium chloride on sodium sulphate.

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answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.