Problem #1 Consider the following reaction: C 6 H 12 O 6 + 6O 2 → 6CO 2 + 6H 2 O If 856 g of C 6 H 12 O 6 is consumed and O 2 is in exc...
Problem #1
Consider the following reaction: C6H12O6 + 6O2 → 6CO2 + 6H2OIf 856 g of C6H12O6 is consumed and O2 is in excess, what is the mass of CO2 produced?
Problem #2
Lithium metal react with water according the following reaction: 2Li (s) + 2H2O (l) → 2LiOH (aq) + H2 (g)
How many grams of Li are needed to produce 9.89 g of H2 (g)?
How many grams of Li are needed to produce 9.89 g of H2 (g)?
Problem #3
If 4 moles of CO and 6 moles of H react according the reaction: CO (g) + 2H2 (g) → CH3OH (g)
Which of the two reactants is the limiting reagent?
Which of the two reactants is the limiting reagent?
Problem #4
Urea is prepared by reacting ammonia with carbon dioxide according to the reaction:
2NH3 (g) + CO2 (g) → (NH2)2CO (aq) + H2O (l)
If 637.2 g of NH3 area treated with 1142 g of CO:
a) Which of the two reactants is the limiting reagent?
b) What is the mass of (NH2)2CO (aq) formed? (in grams)
c) How much of the reagent in excess remains after the reaction is completed? (in grams)
2NH3 (g) + CO2 (g) → (NH2)2CO (aq) + H2O (l)
If 637.2 g of NH3 area treated with 1142 g of CO:
a) Which of the two reactants is the limiting reagent?
b) What is the mass of (NH2)2CO (aq) formed? (in grams)
c) How much of the reagent in excess remains after the reaction is completed? (in grams)
Problem #5
Consider the reaction: TiCl4 (g) + 2Mg (l) → Ti (s) + 2MgCl2 (l)
If 3.54 x107 g of TiCl4 reacts with 1.13 x107 g of Mg to produce 7.91 x106 g of Ti, calculate the theoretical yield (in grams) and the percent yield of Ti.
If 3.54 x107 g of TiCl4 reacts with 1.13 x107 g of Mg to produce 7.91 x106 g of Ti, calculate the theoretical yield (in grams) and the percent yield of Ti.
Problem #6
How many grams of NO are required to produce 145.0 g of N2 from the following reaction:
4NH3 (g) + 6NO (g) → 5N2 (g) + 6H2O (l)
4NH3 (g) + 6NO (g) → 5N2 (g) + 6H2O (l)
Problem #7
H2 gas reacts with N2 gas to produce NH3 gas: 3H2 (g) + N2 (g) → 2NH3 (g)
If 3.76 x10-4 g of H2 (g) is mixed with enough N2 (g), how many molecules of NH3 (g) are produced?
If 3.76 x10-4 g of H2 (g) is mixed with enough N2 (g), how many molecules of NH3 (g) are produced?
Problem #8
How many moles of CaH2 (s) are needed to produce 4.65 g of H2 (g) according the reactions:
CaH2 (s) + 2H2O (l) → Ca(OH)2 (aq) + 2H2 (g)
CaH2 (s) + 2H2O (l) → Ca(OH)2 (aq) + 2H2 (g)
Problem # 9
20.8 g of barium chloride reacts with an excess of sodium sulfate to produce barium sulfate and sodium chloride. How many grams of barium sulfate is formed?
BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2NaCl (aq)
BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2NaCl (aq)
Problem # 10
The reaction of N2SO4 with BaCl2 is as follow: Na2SO4 (aq) + BaCl2 (aq) → BaSO4 (s) + 2NaCl (aq)
If solutions containing exactly 1.00 g of each reactant are mixed:
(a) which reactant is the limiting reagent?
(b) How many grams of BaSO4 (s) are produced?
(c) Calculate the % yield if 0.921 g of BaSO4 (s) are obtained experimentally.
If solutions containing exactly 1.00 g of each reactant are mixed:
(a) which reactant is the limiting reagent?
(b) How many grams of BaSO4 (s) are produced?
(c) Calculate the % yield if 0.921 g of BaSO4 (s) are obtained experimentally.
Problem #11
10.0 g of aluminum oxide and 10.0 g of hydrochloric acid react to produce aluminum chloride and water. Calculate how many grams of aluminum chloride should this reaction produce.
Al2O3 + 6HCl → 2AlCl3 + 3H2O
Al2O3 + 6HCl → 2AlCl3 + 3H2O
Problem #12
The reaction below produces 75.0 g of magnesium oxide experimentally. Calculate the % yield of magnesium oxide when the reaction starts with 56.0 g of magnesium and 74.0 g of oxygen.
2Mg + O2 → 2MgO
2Mg + O2 → 2MgO
Problem #13
1.20 g of sodium bicarbonate and 1.20 g of citric acid react according to the reaction:
3NaHCO3 (s) + H3C6H5O7 (aq) → 3CO2 (g) + 3H2O (l) + Na3C6H5O7 (aq)
Determine how many moles of the excess reagent remain after the reaction is completed.
3NaHCO3 (s) + H3C6H5O7 (aq) → 3CO2 (g) + 3H2O (l) + Na3C6H5O7 (aq)
Determine how many moles of the excess reagent remain after the reaction is completed.
Problem #14
Consider the reaction: 3Mg (s) + N2 (g) → Mg3N2 (s)
How many grams of Mg will be consumed if the reaction starts with 8.33 g of N2?
How many grams of Mg will be consumed if the reaction starts with 8.33 g of N2?
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