Double Replacement and Net Ionic Equations

What precipitate forms when you mix lead (II) nitrate with sodium chloride?

• sodium nitrate 
• lead (II) chloride 
• sodium lead
• chloride nitrate 

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)

Which of the following does NOT form a precipitate?

• Pb(NO₃)₂(aq) + 2KI(aq) →
• Sr(NO₃)_{2 (aq)} + K₂SO_4(aq) →
• AgNO₃(aq) + Na₂S(aq) →
•  Pb(NO₃)₂(aq) + AgNO₃(aq) →

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

In the reaction Zn + H₂O → ZnO₂ + H₂ which element is oxidized? 

• Zinc
• Hydrogen
• Oxygen
• None

What substance is oxidized in the following reaction? 
Fe⁺² + MnO₄  → Fe⁺³ + Mn⁺²   

• Fe⁺²
• Mn⁺³
• Mn⁺²
• MnO₄

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

• -3
• +4
• -2
• +3

What is oxidation number of Mn in MnO₂?

• 0
• +2
• -2
• +4

What is oxidation number of P in K₃PO₄?

• +1
• +5
• -2
• 0