Homework Answers
(a)(i) Volume of CO (g) = 16.2 L
Pressure of CO (g) = 1.50 atm
Temperature of CO (g) = 200.ºC
Convert the temperature to the absolute scale.
T = (273 + 200.)K = 473 K
Use the ideal gas to determine the number of moles of CO.
PV = nRT
where the symbols have their usual meanings.
Therefore,
n = PV/RT
Plug in values and get
n = (1.50 atm)*(16.2 L)/(0.082 L-atm/mol.K)(473 K)
= 0.6265 mol
≈ 0.626 mol (ans, correct to 3 sig, figs).
(ii) The balanced chemical reaction is given as
Fe2O3 (s) + 3 CO (g) ----------> 2 Fe (s) + 3 CO2 (g)
As per the stoichiometric equation,
1 mole Fe2O3 = 3 moles CO.
Mass of Fe2O3 taken = 15.39 g.
The atomic masses are
Fe: 55.845 g/mol
O: 15.999 g/mol
Gram molar mass of Fe2O3 = (2*55.845 + 3*15.999) g/mol
= 159.687 g/mol
Mol(s) Fe2O3 corresponding to 15.39 g = (15.39 g)/(159.687 g/mol)
= 0.09637 mol
≈ 0.0964 mol (correct to 3 sig. figs)
Determine the limiting reactant.
Fe2O3: (0.0964 mol Fe2O3)*(3 mols CO)/(1 mol Fe2O3) = 0.2892 mol CO
CO: (0.626 mol)*(1 mol Fe2O3)/(3 mols CO) = 0.20866 mol Fe2O3 ≈ 0.2087 mol Fe2O3.
We have only 0.0964 mol Fe2O3 and more than 0.2892 mol CO. Therefore, Fe2O3 is the limiting reactant.
(iii) As per the balanced stoichiometric equation,
1 mol Fe2O3 = 2 mols Fe.
Therefore,
Mols Fe corresponding to 0.0964 mol Fe2O3 = (0.0964 mol Fe2O3)*(2 mols Fe)/(1 mol Fe2O3)
= 0.1928 mol Fe.
≈ 0.193 mol Fe (correct to 3 sig, figs)
The moles of Fe formed = 0.193 mol (ans).
Add Answer to:
2003B #2 2. Answer the following questions that relate to chemical reactions. (a) Iron(III) oxide can...
Calculate the standard free-energy change at 25°C for the reduction of iron (III) oxide with carbon...
Calculate the standard free-energy change at 25°C for the reduction of iron (III) oxide with carbon monoxide: Fe,0,(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g) AG®(Fe,0,) = -742.2 kJ/mol AG (CO) = -137.2 kJ/mol AG® (CO2) = -394.4 kJ/mol
are these right? im having a hard time on number 2 a-c Experiment 9-Post-lab Questions 1....
are these right? im having a hard time on number 2 a-c
Experiment 9-Post-lab Questions 1. Methanol (CH,OH) can be produced by the reaction o balanced chemical reaction is by the reaction of carbon monoxide (CO) with hydrogen (H). The CO(g) + 2 H (g)-CH2OH) Suppose 14.0 g of carbon monoxide is reacted with 8.0 g of hydrogen 3. Which reactant is the limiting reagent? Carbon monoxide (co) b. What is the theoretical yield for methanol? 16.02 g CH₂OH c....
47. Iron (III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s) + 3 CO(g)...
47. Iron (III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s) + 3 CO(g) 2 Fe(s) +3 CO2(8) A reaction mixture initially contains 22.55 g Fe203 and 14.78 g CO. Once the reaction has occurred as completely as possible, what mass (in g) of the excess reactant remains?
Assume 117 grams of iron(III) oxide, Fe o reacts with excess hydrogen, H. The problem requires...
Assume 117 grams of iron(III) oxide, Fe o reacts with excess hydrogen, H. The problem requires that you determine the mass of iron, Fe, formed from this reaction. Fe, O (s) + 3 H (9) 2 Fe(s) + 3 H2O(1) 1 mol Fe 0, reus 159.70 g Fe,0, 55.85 g Fe --=81.8 g Fe Imol Fe
questions 35,36,37,38, and 39 all refer to the problem below In the reaction of iron (III)...
questions 35,36,37,38, and 39
all refer to the problem below
In the reaction of iron (III) sulfate and barium
hydroxide,
Fe2(SO4)3 + 3Ba(OH)2 -> 3BaSO4 + 2Fe(OH)3.
If 20.0 g of Fe2(SO4)3 is mixed with 20.0 g of Ba(OH)2.
Molar masses
Fe2(SO4)3 = 399.91
Ba(OH)2 = 171.35
Fe(OH)3 = 106.88
39. If one of the chem 10 students ran the reaction as stated in
problem 35 and got 7.052 g of Ba(OH)2, what is the percentage yield
for the reaction...
answer questions 1,2,3 DQuestion 1 2 pts Pentacarbonyliron (Fe(CO)s) reacts with phosophorous triflouride (PF3) and...
answer questions 1,2,3
DQuestion 1 2 pts Pentacarbonyliron (Fe(CO)s) reacts with phosophorous triflouride (PF3) and hydrogen, releasing carbon monoxide according to the reaction below. If you combine 11.6 moles of Fe(CO)s. 81.6 moles of PF3, and 90 moles of H2, how many moles of Fe(CO)2(PF3)2(H2)2 are formed? Fe(CO)5 (s) + 2 PF3 (s) + 2 H2 (g)--Fe(CO)2(PF3)2(H2)2 (s) + 3 CO (g) uestion2 2 pts What is the percent yield of the following reaction if 23.4 grams of NH3 are...
just show answer please The reaction between iron(II) oxide and carbon monoxide produces iron and carbon...
just show answer please
The reaction between iron(II) oxide and carbon monoxide produces iron and carbon dioxide. How many moles of iron can be obtained when 6,75 mol FeO reacts with an excess of CO? FeO+COFe +CO 6.75 mol Fe The reaction between hydrochloric acid and aluminum produces hydrogen gas and aluminum chloride. How many moles of H, can be obtained when 7.20 mol HCl reacts with an excess of Al? 6 HCl+2 Al 3 H, +2 AICI 3.6 mol...
Consider the reaction between solid iron(III) oxide and carbon monoxide gas to form carbon dioxide gas...
Consider the reaction between solid iron(III) oxide and carbon monoxide gas to form carbon dioxide gas and solid iron (11,111) oxide. If carbon monoxide is present in excess, determine the amount of iron(III) oxide needed to produce 2.21x1024 iron (11,HI) oxide molecules. O 1.83 moles 3.67 moles 07.34 moles O 11.0 moles O 5.50 moles 0.50 mol A, 0.60 mol B, and 0.90 mol C are reacted according to the following reaction A + 2B + 3C 2D + E...
BACKGROUND: Synthesis of Potassium Iron (III) Oxalate Hydrate Salt The iron(II) ions from Fe(NH4)2(SO4)2•6H2O will be precipitated as iron(II) oxalate. Fe^2+(aq) + C2O4^2-(aq) --> FeC2O4 (s) The su...
BACKGROUND: Synthesis of Potassium Iron
(III) Oxalate Hydrate Salt
The iron(II) ions from
Fe(NH4)2(SO4)2•6H2O
will be precipitated as iron(II) oxalate.
Fe^2+(aq) + C2O4^2-(aq) --> FeC2O4 (s)
The supernatant liquid, containing the ammonium and sulfate
ions, as well as excess oxalate ions and oxalic acid will be
decanted and discarded. The solid will then be re-dissolved and the
iron(II) ions will be oxidized to iron(III) ions by reaction with
hydrogen peroxide.
2Fe^2+(aq) + H2O2(aq) --> 2Fe^3+(aq) +2 OH^ - (aq)
The...
Iron ore is reduced to pure iron by smelting, during which the iron (III) oxide in...
Iron ore is reduced to pure iron by smelting, during which the iron (III) oxide in the ore reacts with carbon monoxide gas, like this: Fe2O3(s)+3CO(g) → 2Fe (s)+3CO2() Suppose an engineer decides to study the rate of this reaction. She prepares four reaction vessels with 93.4 g of solid iron (III) oxide and 29.8 g of carbon monoxide gas each. The volume and temperature of each vessel is shown in the table below. of reaction. In other words, select...
Calculate the standard free-energy change at 25°C for the reduction of iron (III) oxide with carbon monoxide: Fe,0,(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g) AG®(Fe,0,) = -742.2 kJ/mol AG (CO) = -137.2 kJ/mol AG® (CO2) = -394.4 kJ/mol
are these right? im having a hard time on number 2 a-c
Experiment 9-Post-lab Questions 1. Methanol (CH,OH) can be produced by the reaction o balanced chemical reaction is by the reaction of carbon monoxide (CO) with hydrogen (H). The CO(g) + 2 H (g)-CH2OH) Suppose 14.0 g of carbon monoxide is reacted with 8.0 g of hydrogen 3. Which reactant is the limiting reagent? Carbon monoxide (co) b. What is the theoretical yield for methanol? 16.02 g CH₂OH c....
47. Iron (III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s) + 3 CO(g) 2 Fe(s) +3 CO2(8) A reaction mixture initially contains 22.55 g Fe203 and 14.78 g CO. Once the reaction has occurred as completely as possible, what mass (in g) of the excess reactant remains?
Assume 117 grams of iron(III) oxide, Fe o reacts with excess hydrogen, H. The problem requires that you determine the mass of iron, Fe, formed from this reaction. Fe, O (s) + 3 H (9) 2 Fe(s) + 3 H2O(1) 1 mol Fe 0, reus 159.70 g Fe,0, 55.85 g Fe --=81.8 g Fe Imol Fe
questions 35,36,37,38, and 39
all refer to the problem below
In the reaction of iron (III) sulfate and barium
hydroxide,
Fe2(SO4)3 + 3Ba(OH)2 -> 3BaSO4 + 2Fe(OH)3.
If 20.0 g of Fe2(SO4)3 is mixed with 20.0 g of Ba(OH)2.
Molar masses
Fe2(SO4)3 = 399.91
Ba(OH)2 = 171.35
Fe(OH)3 = 106.88
39. If one of the chem 10 students ran the reaction as stated in
problem 35 and got 7.052 g of Ba(OH)2, what is the percentage yield
for the reaction...
answer questions 1,2,3
DQuestion 1 2 pts Pentacarbonyliron (Fe(CO)s) reacts with phosophorous triflouride (PF3) and hydrogen, releasing carbon monoxide according to the reaction below. If you combine 11.6 moles of Fe(CO)s. 81.6 moles of PF3, and 90 moles of H2, how many moles of Fe(CO)2(PF3)2(H2)2 are formed? Fe(CO)5 (s) + 2 PF3 (s) + 2 H2 (g)--Fe(CO)2(PF3)2(H2)2 (s) + 3 CO (g) uestion2 2 pts What is the percent yield of the following reaction if 23.4 grams of NH3 are...
just show answer please
The reaction between iron(II) oxide and carbon monoxide produces iron and carbon dioxide. How many moles of iron can be obtained when 6,75 mol FeO reacts with an excess of CO? FeO+COFe +CO 6.75 mol Fe The reaction between hydrochloric acid and aluminum produces hydrogen gas and aluminum chloride. How many moles of H, can be obtained when 7.20 mol HCl reacts with an excess of Al? 6 HCl+2 Al 3 H, +2 AICI 3.6 mol...
Consider the reaction between solid iron(III) oxide and carbon monoxide gas to form carbon dioxide gas and solid iron (11,111) oxide. If carbon monoxide is present in excess, determine the amount of iron(III) oxide needed to produce 2.21x1024 iron (11,HI) oxide molecules. O 1.83 moles 3.67 moles 07.34 moles O 11.0 moles O 5.50 moles 0.50 mol A, 0.60 mol B, and 0.90 mol C are reacted according to the following reaction A + 2B + 3C 2D + E...
BACKGROUND: Synthesis of Potassium Iron
(III) Oxalate Hydrate Salt
The iron(II) ions from
Fe(NH4)2(SO4)2•6H2O
will be precipitated as iron(II) oxalate.
Fe^2+(aq) + C2O4^2-(aq) --> FeC2O4 (s)
The supernatant liquid, containing the ammonium and sulfate
ions, as well as excess oxalate ions and oxalic acid will be
decanted and discarded. The solid will then be re-dissolved and the
iron(II) ions will be oxidized to iron(III) ions by reaction with
hydrogen peroxide.
2Fe^2+(aq) + H2O2(aq) --> 2Fe^3+(aq) +2 OH^ - (aq)
The...
Iron ore is reduced to pure iron by smelting, during which the iron (III) oxide in the ore reacts with carbon monoxide gas, like this: Fe2O3(s)+3CO(g) → 2Fe (s)+3CO2() Suppose an engineer decides to study the rate of this reaction. She prepares four reaction vessels with 93.4 g of solid iron (III) oxide and 29.8 g of carbon monoxide gas each. The volume and temperature of each vessel is shown in the table below. of reaction. In other words, select...
Most questions answered within 3 hours.
-
A sock stuck to the side of a clothes-dryer barrel has a
centripetal acceleration of 24...
asked 28 minutes ago -
A perfect gas undergoes an isentropic process such that its
volume doubles. If the ratio of...
asked 48 minutes ago -
list the elements in groups 3A to 6A in the same order as in the
periodic...
asked 57 minutes ago -
Estimating effect size. Peng and Chen (2014)
evaluated effect size estimates for various tests. In their...
asked 1 hour ago -
Write a script in MySQL that creates and calls a stored
procedure name test. This procedure...
asked 1 hour ago -
If we test the following: H0: μ = 17
vs. H1: μ ≠ 17 and the...
asked 1 hour ago -
in the past year TVG had revenues of 3 million, cost
of goods sold of $25...
asked 1 hour ago -
4) In a polypeptide, which bond cannot rotate because of its
partial double bond character?
The...
asked 1 hour ago -
Assume that in the short run L = 1,000 and K = 100. 1. What is...
asked 1 hour ago -
At a given temperature, 2.06 atm of H2 and 3.7 atm of Br2 are
mixed and...
asked 1 hour ago -
Sodium reacts with Hydrochloric acid to form sodium chloride and
hydrogen gas. 2Na(s)+ 2 HCl(aq)-> 2...
asked 1 hour ago -
The following circuits (1 & 2) are combined to form a
series-parallel circuit and resulting circuit...
asked 2 hours ago