Final Exam Review 2018-19: Chemical Reactions

What are the missing coefficients for the skeleton equation below?

NH₃ (g) + O₂(g) --> N₂(g) + H₂O(l)

• 4,3,2,6

• 2,1,2,3

• 1,3,1,3

• 2,3,2,3

• 3,4,6,2

If you rewrite the following word equation as a balanced chemical equation, what will the coefficient and symbol for iodine be?

bromine + potassium iodide --> potassium bromide + iodine

• 2I^-

• I

• 2I

• I₂

• 2I₂

When the equation, Fe + Cl₂ --> FeCl₃, is balanced, what is the coefficient for Cl₂?

• 1

• 2

• 3

• 4

• 6

What is the correct format of a combustion reaction?

• H₂O + CO₂ --> Compound + O

• H₂O + CO₂ --> Compound + O₂

• Compound + O --> H₂O + CO₂

• Compound + O₂ --> H₂O + CO₂

If a combination reaction take place between magnesium and bromine, what is formed?

• MgBr

• Mg₂Br

• MgBr₂

• BrMg

What is the product in the combination reaction between potassium and chlorine?

• KCl

• KCl₂

• K₂Cl

• PCl

2HI → H₂ + I₂

• synthesis

• decomposition

• single replacement

• double replacement

Zn + H₂S --> ZnS + H₂

• synthesis
• combustion
• single replacement
• double replacement

Fe + O₂ --> Fe₂O₃

• synthesis
• acid base
• single replacement
• decomposition

What kind of reaction is this:

2C₃H₇OH +9O₂ → 6CO₂ + 8H₂O

• Double Replacement

• Combustion

• Single Replacement

• Decomposition