Question & Answer » Chemistry Questions » What happens when lead nitrate reacts with potassium iodide

What happens when lead nitrate reacts with potassium iodide

What happens when lead nitrate reacts with potassium iodide?

Lead (II) nitrate interacts with potassium iodide to form lead (II) iodide and potassium nitrate. Potassium nitrate dissolves in water. Lead (II) iodide, on the other hand, is only moderately soluble in water. The majority of the lead (II) iodide in the solution precipitates out as a yellow solid. This is a two fold displacement reaction in operation.

2KI(s) + Pb(NO)3(s) 2KNO3(aq) + PbI2(s)

Pb(NO3)2 is the chemical formula for lead(II) nitrate, an inorganic molecule. It is often found as a colourless crystal or white powder and is water soluble, unlike most other lead (II) salts. To avoid inhalation, ingestion, or skin contact, lead (II) nitrate must be handled with caution. The few applications of lead (II) nitrate are constantly scrutinised due to their dangerous nature.

Potassium iodide is a dietary supplement, medicine, and chemical substance. It is used to treat hyperthyroidism, to protect the thyroid gland when specific types of radiopharmaceuticals are employed, and to treat radiation crises. It’s also used to treat cutaneous sporotrichosis and phycomycosis in underdeveloped countries. It’s used as a supplement for people who don’t get enough iodine in their diet. It’s given to you orally.

A double displacement reaction occurs when two reactants exchange ions, resulting in the formation of two new molecules. In most cases, double displacement reactions result in the creation of a precipitate.

The following are examples of double displacement reactions:

AD + CB AB + CD

Double Displacement Reaction is a key takeaway:

  • A twofold displacement reaction occurs when the reactant ions swap places to generate new products.
  • A double displacement reaction usually results in precipitation.
  • Covalent or ionic chemical bonds can form between the reactants.
  • A double displacement reaction is also known as a salt metathesis reaction or a double decomposition reaction.

Although the bonds generated between the chemical species might be either ionic or covalent in character, the reaction happens more frequently between ionic compounds. Double displacement reactions can involve acids or bases. The bonds that form in the result compounds are the same as those that form in the reactant molecules. Water is commonly used as a solvent in this type of reaction.

AgNO3 + NaCl AgCl + NaNO3

Here’s another example:

BaCl2(aq) + Na2SO4(aq) BaSO4(s) +2NaCl(aq)

A double displacement reaction occurs when silver nitrate reacts with sodium chloride. The nitrite ion of silver is exchanged for the chloride ion of sodium, leading the sodium to absorb the nitrate anion.