Balancing a Reaction Worksheet - Answer Key

 

Back to the other Stoichiometry Workbooks and other General Chemistry Workbooks

Go To -> Worksheet - Answer Key - Solutions Manual

  1. Indicate the reactants side, products side and states of matter in the reaction equation below.

    Reactants are on the left side of the reaction arrow and products are on the right side.  The states of matter are indicated by the letter abbreviation following the molecule formula.

     

     

  2. What are the 4 primary states of matter?
    1. Solid – (s)
    2. Liquid – (l)
    3. Gas – (g)
    4. Aqueous – (aq) – dissolved in water

       

       

  3. Why do we have to balance reactions?

    Because matter cannot be created or destroyed (The Law of Conservation of Matter). 

     

     

  4. Before we can utilize a reaction in problem solving you must balance the equation.  This means we add coefficients to the equation we do NOT alter the subscripts in the formulae.

     

     

  5. How do you know when a reaction has been balanced?

    When the total moles of every element in the reaction is equal on both side of the equation. 

     

     

  6. Balance the following equations
    • 2Eu (s) + 6HF (g)→ 2EuF3 (s) + 3H2 (g)
    • 4NH3 (g) + 5 O2 (g)→ 4NO (g) + 6H2O (g)

 

Home . Support Us . Contact Us