What Happens When Lead Nitrate Reacts With Potassium Iodide?

By K Balaji|Updated : November 7th, 2022

When lead reacts with potassium iodide, it forms lead iodide and potassium nitrate. KNO3 dissolves easily in water. PbI2 is moderately soluble and majority of it precipitates as a yellow solid.

Lead Nitrate with Potassium Iodide

  • Lead(II) nitrate (Pb(NO3)2) interacts with potassium iodide (KI) to form Lead(II) iodide (PbI2) and Potassium nitrate (KNO3).
  • It is possible to classify this reaction as a displacement reaction.

2KI(s) + Pb(NO3)2 (aq) → 2KNO3(aq) + PbI2(s)

Properties

  • In water, potassium nitrate dissolves.
  • On the other hand, water barely slightly dissolves lead(II) iodide.
  • Most of the solution's lead(II) iodide precipitates out as a yellow solid.

Uses of Potassium Iodide

  1. It acts as a nutrient supplement in both human diets and animal feed.
  2. Table salt is the most widely used ingredient that includes it.
  3. It is employed to stop iodine loss due to salt oxidation.
  4. To treat hyperthyroidism, it is used.
  5. It helps to promote hormonal balance.
  6. As a result, cells and tissues are filtered of chlorides, bromides, fluorides, and mercury.
  7. It acts as an expectorant to thin mucus and ease breathing for the patient.
  8. It can help decrease the size of the thyroid gland and the quantity of thyroid hormones generated.

Summary:-

What Happens When Lead Nitrate Reacts With Potassium Iodide?

Lead and potassium nitrate are the products of the reaction between lead and potassium iodide. KNO3 dissolves easily in water. PbI2 is moderately soluble and majority of it precipitates as a yellow solid.

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