Download Honors Chemistry Final Essay Questions 2007

Honors Chemistry Final Essay Questions 2014
1. 200. mL of 6.00 M HCl and 100.0 mL of 5.00 M Sr(OH)2 are mixed and diluted to 500. mL
with distilled water. What are the values of pH, pOH, [H3O+1], and [OH -1] for the resulting
solution?
2. An aqueous solution contains 5.23 % Sodium Acetate (NaC2H3O2) (MM = 82.04 g/mole) by
mass at 25.0 oC. Assume the density of the solution is 1.00 g/mL. Calculate the following:
a. The freezing point of the solution.
b. The boiling point of the solution.
c. The osmotic pressure of the solution.
3. Calculate the total energy required to convert 55.10 grams of ice at – 3.50 oC to a resulting
gaseous state at 104.5 oC. A graph must be drawn to receive full credit.
S(solid) = 2.10 J/g ▪ oC
S(liquid) = 4.20 J/g ▪ oC
S(vapor) = 2.10 J/g ▪ oC
H fusion
H vaporization
= 6.02 kJ/mole
= 40.7 kJ/mole
4. 1.43 moles of O2 gas and 38.60 grams of solid Carbon (graphite) are placed in a 3.00 liter
flask at 25 oC. If the carbon and oxygen react completely to form CO(g) as the only
product, what will be the final pressure in the container at 25 oC ?
5. If 6.57 g of iron are reacted with 8.85 g of hydrochloric acid, how many grams of iron III
chloride would be produced? What is the limiting reactant? If 9.52 grams of Iron III chloride
were actually produced in the lab, what is the percent yield? (You must write a balanced
equation to complete the calculations.)
6. For the following reactions, write a balanced equation, net ionic equation (if one occurs),
label the states of the reactants and products on both the balanced equation and the net
ionic equation, and list the spectator ions and driving force for each of the reactions.
a. silver nitrate solution + magnesium bromide solution
b. barium chloride solution + potassium sulfate solution
c. sulfuric acid solution + hydrobromic acid solution