An IB Periodic Table is required (Molar volume of gas at stp is 22.7 dm3 mol-1) |
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1. What amount (in moles) of carbon monoxide is required to produce 56.0g of iron according to the following equation?
Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g)
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2. What is the theoretical yield of sodium oxide when 4.60g of sodium is burned in excess oxygen?
4Na(s) + O2(g) →2Na2O(s)
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3. Ammonia is manufactured by the Haber Process as shown:
N2(g) + 3H2(g) → 2NH3(g) 280kg of nitrogen produced 170kg of ammonia. What was the percentage yield?
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4. How many moles of carbon monoxide are produced during the incomplete combustion of 4.4g propane?
2C3H8(g) + 7O2(g) → 6CO(g) + 8H2O(l)
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5. 0.6mol of tetrachloromethane, CCl4, and 0.6mol of antimony(III)fluoride, SbF3, react to form the refrigerant freon-12 as shown below.
3CCl4 + 2SbF3 → 3CCl2F2 + 2SbCl3 What is the limiting reactant and how many moles of the excess reactant remain unreacted? |
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6. Iron metal is formed by the reduction of Fe3O4 as shown below.
Fe3O4(s) + 4H2(g) → 3Fe(s) + 4H2O(l) What amount (in moles) of hydrogen is required to produce 9.3 mol of iron?
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7. Sodium hydroxide and chlorine react as follows:
3Cl2 + 6NaOH → NaClO3 + 5NaCl + 3H2O How many moles of sodium chlorate(V), NaClO3, are produced in the reaction between 0.60 moles of Cl2 and 0.60 moles of NaOH?
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8. 2.0g of impure magnesium carbonate reacted with excess hydrochloric acid producing 0.010mol of carbon dioxide.
MgCO3(s) + 2HCl(aq) → MgCl2(aq) + CO2(g) + H2O(l) |
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Assuming magnesium carbonate is the only substance reacting to produce carbon dioxide, what was the percentage purity of the magnesium carbonate?
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9. What is the theoretical yield (in grams) of iron(II)iodide, FeI2, when 5.0g of iron and 10.0g of iodine are heated together?
Fe (s) + I2(s) → FeI2(s)
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10. Hydrogen sulfide, H2S, reacts with oxygen as shown:
2H2S + 3O2 → 2H2O + 2SO2 If 22.7dm3 (measured at stp) of H2S and 32g O2 are reacted, what is the limiting reactant and how many moles of SO2 are produced? |
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