Chemical Reaction Review 2

KNO₃ --> KNO₂ + O₂
What coefficients are needed to balance the reaction?

• 2, 2, 1
• 2, 3, 2
• 1, 2, 2
• 1, 3, 1

What is the correct formula for Sodium Oxide?

• NaO
• NaO₂
• Na₂O
• Na₂O₂

CaI₂

• calcium diodide
• calcium iodide
• calcium iodate
• calcium iodine

Cu₂CO₃

• copper carbonate
• copper II carbonate
• copper I carbonate
• copper carbon oxide

Pb(NO₃)₂  +  KI --> PbI₂ + KNO₃
What type of reaction is this? 

• Synthesis 
• Decomposition 
• Single Replacement
• Double Replacement 

Which is NOT a diatomic molecule?

• Fluorine
• Nitrogen
• Boron
• Bromine

Write the equation for the following:

nickel (III) hydroxide reacts with copper to form nickel and copper (II) hydroxide

• Ni(OH) + Cu → Ni + Cu(OH)

• NiOH₃ + Cu → Ni + CuOH₂

• Ni(OH)₃ + Cu → Ni + Cu(OH)₂

• Ni(OH)₃ + Cu²⁺ → Ni³⁺ + Cu(OH)₂

Write the equation for the following:

copper (II) chloride reacts lithium carbonate to form lithium chloride and copper (II) carbonate

• CuCl₂ + Li₂CO₃ → LiCl + CuCO_3

• Cu²⁺Cl^1- + Li¹⁺CO₃^2- → Li¹⁺Cl^1- + Cu²⁺CO_3^2-

• Cu₂Cl + Li(CO₃)₂ → LiCl + Cu₂(CO₃)_2

• CuCl + LiCO₃ → LiCl + CuCO₃

Write the equation for the following:

fluorine and sodium chloride react to form sodium fluorine and chlorine.

• F + NaCl → NaF + Cl

• F + Na¹⁺Cl^1- → Na¹⁺F^1- + Cl

• F₂ + Na¹⁺Cl^1- → Na¹⁺F^1- + Cl₂

• F₂ + NaCl → NaF + Cl₂

Which problem is balanced?
(Check ALL answers)

• PbO₂ + 2H₂
• SO₂ + H₂0 --> H₂SO₄
• 2Na + 2H₂O --> 2NaOH + H₂