Chemistry, asked by susyhernandez340, 7 months ago

Is the reaction between potassium iodide and lead (II) nitrate a physical change or a chemical change?

Answers

Answered by FrancisJeitley
4

Answer:When you add lead nitrate to potassium iodide, their particles combine and create two new compounds, a yellow solid called lead iodide and a white solid called potassium nitrate. Yellow clouds indicate that the chemical change has taken place.

Explanation:

Answered by rahul123437
1

The reaction between potassium iodide and lead (II) nitrate is a CHEMICAL CHANGE.

CHEMICAL CHANGE -

  • An irreversible change involves chemical bonding and change in the molecular structure of the reactants.
  • The reactants undergo reactions to form new chemical products.
  • The reaction of potassium iodide with lead nitrate is a double-displacement chemical change.
  • The double displacement reaction is characterised by the formation of an insoluble salt, precipitate.
  • The potassium ions replace lead to form potassium nitrate and lead ions react with iodide ions to form lead iodide.
  • The lead iodide is the insoluble salt precipitate of yellow color formed after the reaction.

                                 KI(aq) + PbNO_3(aq)KNO_3(aq) + PbI_2(s)

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