Part 1

1. For each of the following reactants, predict the products and complete and balance the equations with formulas, symbols, and coefficients. Write the correct physical state (g), (l), (s), (aq). State the type of reaction.

Octane burns in air (oxygen)

Equaition:________________________________________________________________

Type of reaction:____________________

b. Solid sodium chlorate is heated

c. Sodium metal is added to water

d. Solid sulfur dioxide reacts with water

e. Solutions of silver nitrate and hydrochloric acid are mixed

2. Write the molecular equation, with physical states [(g), (l), (s), (aq)], total ionic and net ionic equations for each of the following reactions. All equations must be balanced. See problems 14.41 and 14.42 and 14.43 on pgs 540-541

Molecular:________________________________________________________________

Total:____________________________________________________________________________

Net:_____________________________________________________________________________

Problems For the following problems show all work, correct units (throughout the problem) and significant figures. Present your work in an organized fashion.

1. Hydrofluoric acid, HF cannot be stored in glass bottles because it attacks silicate compounds present in the glass. For example, sodium silicate, Na₂SiO₃, reacts with HF in the following way: Na₂SiO₃+ 8 HF à H₂SiF₆ + 2 NaF +3 H₂O

How many grams of HF must react to produce 27.00 g of H₂O?

How many molecules of H₂SiF₆ are produced from the reaction of 2.000 g of Na₂SiO₃?

How many moles of sodium silicate must react to produce 25.00g of sodium fluoride?

How many grams of HF are needed to react with 50.00 g of sodium silicate?

2. What volume in milliliters of 0.50M H₂SO₄ is required to react with 18.0 g of nickel according to the following equation?

Ni _(s) + H₂SO_{4
(aq)} à NiSO_{4 2 (aq)}+ H_{2 (g)}

3. If the percent yield for the reaction 2 C + O₂ à 2CO were 57.8%, what mass of product, in grams, could be produced from a reactant mixture containing 35.0 g of each reactant?

4. A solution containing 9.978 g of silver nitrate is mixed with a solution containing 12.205 g of hydrochloric acid

a. What is the limiting reactant?

b. What is the maximum mass (in grams) of silver chloride produced?

c. How many grams of the excess reactant remain after the reaction is complete?