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- 1. Multiple Choice
Fe + S → FeS
0.8 moles of Fe are allowed to react an excess of S. What is the mass of FeS produced?
(Ar of Fe = 56, Ar of S = 32)
25.6 g
44.8 g
70.4 g
88 g
- 2. Multiple Choice
2CO + O2 → 2CO2
What is the mass of CO2 produced by reacting 2 moles of O2 with an excess of CO?
(Ar of C = 12, Ar of O = 16)
22 g
44 g
88 g
176 g
- 3. Multiple Choice
2H2 + O2 → 2H2O
How many moles of water can be made from 100 g of hydrogen?
(Ar of H = 1, Ar of O = 16)
25 mol
50 mol
100 mol
200 mol
- 4. Multiple Choice
2C2H6 + 7O2 → 4CO2 + 6H2O
What is the mass of C2H6 used to produce 2 moles of CO2?
(Ar of C = 12, Ar of H = 1, Ar of O = 16)
2 g
30 g
60 g
120 g
- 5. Multiple Choice
CH4 + 2O2 → CO2 + 2H2O
24 g of CH4 will produce how many grams of CO2?
(Ar of C = 12, Ar of H = 1, Ar of O = 16)
15 g
24 g
44 g
66 g
- 6. Multiple Choice
Zn + 2HCl → ZnCl2 + H2
When 14.6 g of HCl is used, what is the mass of H2 produced?
(Ar of H = 1, Ar of Cl = 35.5)
0.2 g
0.4 g
0.8 g
7.3 g
- 7. Multiple Choice
2NaClO3 → 2NaCl + 3O2
What is the mass of O2 produced from 213 g of NaClO3?
(Ar of Na = 23, Ar of Cl = 35.5, Ar of O = 16)
48 g
96 g
213 g
319.5 g
- 8. Multiple Choice
2Al + 3H2SO4 → Al2(SO4)3 + 3H2
What is the mass of aluminum sulfate formed if 147 g of sulfuric acid completely reacted with aluminum?
(Ar of Al = 27, Ar of H = 1, Ar of S =32, Ar of O = 16)
49 g
98 g
342 g
513 g
- 9. Multiple Choice
CuCl2 + 2NaOH → Cu(OH)2 + 2NaCl
After adding an excess of aqueous NaOH to 54 g of aqueous CuCl2, what is the mass of Cu(OH)2 obtained?
(Ar of Cu = 64, Ar of Cl = 35.5, Ar of Na = 23, Ar of O = 16, Ar of H = 1)
39.2 g
54 g
98 g
108 g
- 10. Multiple Choice2H2 + O2 −−〉 2H2O
8.3 moles H2 −−〉 ? moles H2O4.158.316.674.04 - 11. Multiple ChoiceThe limiting reactantslows the reaction downis used up firstis the reactant that is left overcontrols the speed of the reaction
- 12. Multiple ChoiceUse the equation 2 Al + 3 Cl2 ---> 2 AlCl3. If 2 moles of aluminum and 2 moles of chlorine are reacted, identify the limiting reactant.AlCl3Cl2Al
- 13. Multiple ChoiceWhen does a chemical reaction stop?When the lab is finishedWhen the excess reactant is used upWhen the limiting reactant is used upChemical reactions never stop
- 14. Multiple ChoiceWhat is the limiting reactant if 10 moles of NH3 react with 30.0 moles of NO?
4NH3+6NO --> 5N2 + 6H2ONH3NON2water - 15. Multiple ChoiceWhen 12 moles of O2 reacts with 1.1 mole of C10H8 what is the limiting reactant? C10H8 + 12 O2 --> 10 CO2 + 4 H2OOxygenC10H8WaterCarbon Dioxide
- 16. Multiple ChoiceP4 + 3O2 --> P4O6
What is the limiting reactant is 12 moles of P4 react with 15 moles of O2?P4O2P4O6none of the above - 17. Multiple Choice4NH3 + 5O2 --> 4NO + 6H2O
How many grams of NO are formed if 6.30g of ammonia react with 1.80g of oxygen?0.37g0.045g1.35g11.1g - 18. Multiple ChoiceHow many grams of FeS are formed from 7.62g of Fe reacted with excess S?3.82g7.62g12.2g11.4g
- 19. Multiple Choice
3NH4NO3 + Na3PO4 --> (NH4)3PO4 + 3 NaNO3
Assuming we start with 30 g of NH4NO3 and 50 g of Na3PO4, identify the limiting reactant.
ammonium phosphate
sodium phosphate
ammonium nitrate
sodium nitrate
- 20. Multiple Choice
3CaCO3 + 2FePO4 --> Ca3(PO4)2 + Fe2(CO3)3
Assuming we start with 100 g of CaCo3 and 45 g of FePO4, identify the limiting reagent.
iron(V) phosphate
calcium carbonate
iron(III) phosphate
calcium(II) carbonate
- 21. Multiple ChoiceYou need 2 pieces of bread, 1 tablespoon of peanut butter and 2 tablespoons of jelly to make a sandwich. If you have 10 pieces of bread, 4 tablespoons of peanut butter and 20 tablespoons of jelly, what is the limiting reactant?breadjellypeanut buttersandwich
- 22. Multiple ChoiceFe + S --> FeS
If 7.62g Fe react with 8.67g S, what is the limiting reactant?FeSFeSnone - 23. Multiple ChoiceWhat is a limiting reactant?the reactant that determines how much product can be madethe reactant that is in excessthe product that you can make the most ofthe amount of reactants that react with each other
- 24. Multiple ChoiceWhen 12 moles of O2 reacts with 1.1 mole of C10H8 what is the limiting reactant? C10H8 + 12 O2 --> 10 CO2 + 4 H2OOxygenC10H8WaterCarbon Dioxide
- 25. Multiple ChoiceUse the equation 2 Al + 3 Cl2 ---> 2 AlCl3. If 2 moles of aluminum and 2 moles of chlorine are reacted, identify the limiting reactant.AlCl3Cl2Al
- 26. Multiple ChoiceCH4 + 2H2O --> CO2 + 4H2
What is the limiting reactant when 20g CH4 react with 15g H2O?CH4H2OCO2H2 - 27. Multiple ChoiceSO2 + PCl5 --> SOCl2 + POCl3
How much SOCl2 is produced when 16.2g SO2 react with 13.7g PCl5?7.87g30.1g26.4g19.8g - 28. Multiple ChoiceFe + S --> FeS
If 7.62g Fe react with 8.67g S, what is the limiting reactant?FeSFeSnone - 29. Multiple Choice2 NaCl + Pb(NO3)2 --> 2 NaNO3 + PbCl2
How many grams of lead II chloride are produced from the reaction of 15.3 g of NaCl and 60.8 g of Pb(NO3)2?21.5g51.1g43.4g36.4g - 30. Multiple Choice2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?0.85 g290 g450 g870 g - Answer choicesTagsAnswer choicesTags