Double Displacement Reactions and Products

The video tutorial covers double replacement reactions, explaining their identification and general form. It provides examples with silver nitrate and potassium chromate, and potassium iodide and lead nitrate, demonstrating how to balance equations and identify precipitates using a solubility table. Additional examples include reactions with sodium cyanide and sulfuric acid, and calcium hydroxide and hydrochloric acid.

What is a key characteristic of double displacement reactions?

• They always produce a gas.

• They involve the exchange of electrons.

• They result in the formation of a single compound.

• They involve the exchange of positive ions between two compounds.

In a double displacement reaction, what typically happens to the inner constituents of the compounds?

• They dissolve in water.

• They are released as gases.

• They recombine to form new compounds.

• They remain unchanged.

What is the product formed when silver nitrate reacts with potassium chromate?

• Silver iodide

• Potassium nitrate

• Silver chromate

• Potassium iodide

What color precipitate is formed in the reaction between silver nitrate and potassium chromate?

• Green

• Red-brown

• Blue

• Yellow

Which compound is insoluble in the reaction between silver nitrate and potassium chromate?

• Potassium nitrate

• Potassium chromate

• Silver nitrate

• Silver chromate

What is the color of the precipitate formed when potassium iodide reacts with lead nitrate?

• Red

• White

• Blue

• Canary yellow

Which compound is insoluble in the reaction between potassium iodide and lead nitrate?

• Potassium nitrate

• Lead iodide

• Potassium iodide

• Lead nitrate

What is the product formed when sodium cyanide reacts with sulfuric acid?

• Sodium chloride

• Sodium sulfate

• Sulfur dioxide

• Hydrogen cyanide

In the reaction between calcium hydroxide and hydrochloric acid, what is one of the products?

• Calcium sulfate

• Water

• Calcium carbonate

• Hydrogen gas

What is the charge of calcium in the reaction with hydrochloric acid?

• +1

• +2

• -1

• -2