Chemistry Chapter 9 Practice questions for test

For the reaction represented by the equation Pb(NO3)2 + 2KI → PbI2 + 2KNO3, how many moles of lead(II) iodide are produced from 300. g of potassium iodide and an excess of Pb(NO3)2?

0.904 mol

For the reaction represented by the equation Cl2 + 2KBr → 2KCl + Br2, how many moles of potassium chloride are produced from 119 g of potassium bromide?

1.00 mol

For the reaction represented by the equation 2H2 + O2 → 2H2O, how many grams of water are produced from 6.00 mol of hydrogen?

108 grams

For the reaction represented by the equation 2H2 + O2 → 2H2O, how many moles of water can be produced from 6.0 mol of oxygen?

12 mol

For the reaction represented by the equation 2Na + 2H2O → 2NaOH + H2, how many grams of sodium hydroxide are produced from 3.0 mol of sodium with an excess of water?

120 grams

In the reaction represented by the equation N2 + 3H2 → 2NH3, what is the mole ratio of nitrogen to ammonia?

1:2

Ozone, O3, is produced by the reaction represented by the following equation: NO2(g)+O2(g) → NO(g)+O3(g) What mass of ozone will form from the reaction of 2.0 g of NO2 in a car's exhaust and excess oxygen?

2.1 g O3

For the reaction represented by the equation 3Fe + 4H2O → Fe3O4 + 4H2, how many moles of iron(III) oxide are produced from 500. g of iron in an excess of H2O?

2.98 mol

For the reaction represented by the equation C + 2H2 → CH4, how many moles of hydrogen are required to produce 10 mol of methane, CH4?

20 mol

In the reaction represented by the equation C + 2H2 → CH4, what is the mole ratio of hydrogen to methane?

2:1

The Haber process for producing ammonia commercially is represented by the equation N2(g) + 3H2(g) → 2NH3(g). To completely convert 9.0 mol hydrogen gas to ammonia gas, how many moles of nitrogen gas are required?

3.0 mol

For the reaction represented by the equation SO3 + H2O → H2SO4, how many grams of sulfur trioxide are required to produce 4.00 mol of sulfuric acid in an excess of water?

320 grams

In the reaction represented by the equation N2 + 3H2 → 2NH3, what is the mole ratio of hydrogen to ammonia?

3:2

In the equation 2KClO3 → 2KCl + 3O2, how many moles of oxygen are produced when 3.0 mol of KClO3 decompose completely?

4.5 mol

In the reaction represented by the equation 2Al2O3 → 4Al + 3O2, what is the mole ratio of aluminum to oxygen?

4:3

For the reaction represented by the equation 2KClO3 → 2KCl + 3O2, how many moles of potassium chlorate are required to produce 250. g of oxygen?

5.23 mol

For the reaction represented by the equation 2Fe + O2 → 2FeO, how many grams of iron(II) oxide are produced from 8.00 mol of iron in an excess of oxygen?

575 grams

For the reaction represented by the equation 2HNO3 + Mg(OH)2 → Mg(NO3)2 + 2H2O, how many grams of magnesium nitrate are produced from 8.00 mol of nitric acid, HNO3, and an excess of Mg(OH)2?

593 grams

For the reaction represented by the equation CH4 + 2O2 → CO2 + 2H2O, how many moles of carbon dioxide are produced from the combustion of 100. g of methane?

6.23 mol

For the reaction represented by the equation AgNO3 + NaCl → NaNO3 + AgCl, how many moles of silver chloride, AgCl, are produced from 7.0 mol of silver nitrate AgNO3?

7.0 mol

For the reaction represented by the equation 2Na + Cl2 → 2NaCl, how many grams of chlorine gas are required to react completely with 2.00 mol of sodium?

70.9 grams

For the reaction represented by the equation N2 + 3H2 → 2NH3, how many moles of nitrogen are required to produce 18 mol of ammonia?

9.0 mol