chemistry Hw

Chemistry 115 – Activity

Activity 8

Name:____________________

1. Aluminum reacts with iodine to form aluminum iodide, according to the following reaction:

Al(s) + I2(s) ( AlI3(s)

If you had 70.0g of Al, how many grams of Iodine would be needed to completely react with the Al.?

2. Propane (C3H8) reacts with oxygen according to the following combustion reaction:

C3H8(g) + O2(g) ( CO2(g) + H2O(g)

If 50.0Kg of propane are in the reaction, how much oxygen (in grams) would be required to react completely?

3. At high temperatures and pressures, nitrogen will react with hydrogen to produce ammonia, as shown by the equation

___N2(g) + ___H2(g) ( ​​___NH3(g)

For each of the following combinations of reactants, decide which is the limiting reactant.

a. 1.25 moles of N2 and 3.65 moles of H2

b. 44.0 g of N2 and 3.00 moles of H2

4. Magnesium nitride can be prepared by the direct reaction of the elements, as shown by the equation

___Mg(s) + ___N2(g) ( ___Mg3N2(s)

How many grams of magnesium nitride can be produced from the following amounts of reactants?

a. 10.0 g of Mg and 10.0 g of N2

b. 20.0 g of Mg and 10.0 g of N2

#2 Continued…

c. 30.0 g of Mg and 10.0 g of N2

d. 40.0 g of Mg and 10.0 g of N2

5. Aluminum and oxygen react to form aluminum oxide by the equation

___Al(s) + ___O2(g) ( ___Al2O3(s)

In a certain experiment, 137 g of Al2O3 are produced from 75.6 g of Al and 124 g of O2.

a. What is the theoretical yield of Al2O3?

b. What is the percent yield of Al2O3?