AP Chemistry Name____________________________

Stoichiometry Test 2000 (form A)

Mr. McAfoos Period_______ Date________________

For each problem in this test, complete and balance the reaction (whether or not it occurs) then solve the problem. Be sure to show all work, use correct units and significant figures.

  1. When 17.88 g of ammonium phosphate react with lead II nitrate, what is the limiting reagent? What reactant is in excess and how much excess is there?
  2. A friend finds a bottle of silver nitrate and convinces you that if you can find a way to get the silver out of the compound, you will be able to sell it for an immense profit, enabling you to quit school and live out the rest of your days on a balmy beach in the Caribbean. If the going price for silver is $14.89 per gram, the bottle contains 1293.6 g of silver nitrate and you have access to 987.2 grams of copper wire, what is the monetary value of the silver you can retrieve?
  3. If a huge block of lithium metal were thrown into the Delaware River, it would kill a lot of fish. How many molecules of hydrogen gas would be produced if 38.67g of copper were dumped into the river? (Assuming the river is pure water…yeah right!)
  4. 24.99 g of aluminum carbonate is heated. What volume of the gaseous product can be produced at STP (when the molar volume is 22.4L) and how many ml of a 3.99M solution could be made with the other product?
  5. How many grams of chlorine are required to completely react with 5.555 x1024 molecules of sodium bromide?
  6. A student takes a sample of hydrated aluminum sulfate and places it in a pre-weighed crucible, heats it and then reweighs it. If she obtains the following data what is the empirical formula of the hydrated salt?
  7. Mass empty crucible


    Mass crucible and hydrated salt


    Mass crucible an salt after heating


  8. Complete each of the following reactions, then tell me if they would occur. For those reactions that WOULD occur, tell me Why they would occur:

Ammonium sulfate reacts with lithium hydroxide

Barium metal reacts with stannous acetate (stannous = tin)

Chlorous acid reacts with strontium hydroxide

Butanol (C4H9OH) burns