Chem H [Post-Lab] SR Rxn

Lab A: Cu + Ag(NO₃)₂ -> ?

What did copper replace in the reaction?

• silver ion, Ag²⁺

• nitrate ion, NO₃^-

Lab A: Cu + Ag(NO₃)₂ -> ?

What is the "grey" powder growing on the copper wire?

• silver metal

• copper metal

• Nitrate ion

Lab A: Cu + Ag(NO₃)₂ -> ?

SELECT TWO: What are the products from this reaction?

• silver metal, Ag

• copper nitrate, Cu(NO₃)₂

• nitrate ion, NO₃^-

• silver nitrate, Ag(NO₃)₂

Lab A: Cu + Ag(NO₃)₂ -> ?

Where did the blue hue in the reaction between copper and silver nitrate come from?

• The silver ions in the solution absorbed light, producing a blue color.

• Copper reacted with nitrate ions to form a blue-colored gas.

• Copper dissolved in the solution, creating blue copper ions.

Lab B: Mg + CuSO₄ --> ?

SELECT TWO: What are the reactants of this reaction?

• Mg

• CuSO₄

• Cu

• MgSO₄

Lab B: Mg + CuSO₄ --> ?

SELECT TWO: What are the products of this reaction?

• Mg

• CuSO₄

• Cu

• MgSO₄

Lab B: Mg + CuSO₄ --> ?

Why did you observe the magnesium metal becoming covered with a reddish-brown color?

• The magnesium reacted with oxygen in the air, forming rust.

• Copper sulfate is converted into magnesium sulfate without any color change.

• Copper metal is deposited on the magnesium, giving it a reddish-brown color.

Lab B: Mg + CuSO₄ --> ?

Did you witness any "rust" in this reaction?

• Yes, because the metal turned brown.

• No, because 'rust' is only formed when iron is involved.