Redox and Net Ionic Equations

What is the precipitate formed when you mix silver nitrate with copper chloride?

• copper nitrate
• copper chloride
• silver chloride
• silver nitrate

What is the precipitate formed between potassium bromide and ammonium sulfide

• potassium sulfide
• ammonium bromide
• potassium ammonium
• no ppt is formed

Which is the correct net ionic equation for the reaction of AgNO₃ and CaCl₂?

• Ca²⁺(aq) +  2Cl^- (aq) → CaCl(s)
• Ag⁺(aq)  +  Cl^- (aq) → AgCl(s)
• Ag +  Cl  →  AgCl
• Ag⁺  +  Ca²⁺   →Ag₂Ca (s)

What are the spectator ions in the reaction of sodium chloride with silver nitrate?

• silver and nitrate
• sodium and chloride
• sodium and nitrate
• silver and chloride

In the reaction
2Ca(s) + O₂(g) → 2CaO(s), calcium is...

• Reduced
• Synthesized
• Oxidized
• None of the above

Tags

NGSS.HS-PS1-1

What are the spectator ions in this reaction?
CuCl₂(aq) + NaOH(aq) → Cu(OH)₂(s) + NaCl(aq)
 

• Cu²⁺ and OH^1-
• Na²⁺ and Cl^2-
• Na¹⁺ and Cl^1-
• Na¹⁺ and OH^1-

If in a reaction, copper is reduced; its number of electrons has:

• Increased
• Decreased
• Remained Constant
• Varies Randomly

Tags

NGSS.HS-PS1-2

What is the oxidation number of N in NO₂^-1?

• -3

• +4

• -2

• +3

Which of these is not a redox reaction?

• Cu₂O + H₂SO₄ ⟶ CuSO₄ + Cu + H₂O

• MgO + 2HCl ⟶ MgCl₂ + H₂O

• SnCl₂ + HgCl₂ ⟶ Hg + SnCl₄

• MnO₂ + 4HCl ⟶ MnCl₂ + 2H₂O + Cl₂

Oxygen always has an oxidation number of...

• -1
• 1
• 2
• -2