Question

In: Chemistry

Calculate ΔHrxn for the following reaction: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) Use the following reactions and given ΔH′s. 2Fe(s)+3/2O2(g)→Fe2O3(s), ΔH...

Calculate ΔHrxn for the following reaction:
Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g)
Use the following reactions and given ΔH′s.
2Fe(s)+3/2O2(g)→Fe2O3(s), ΔH = -824.2 kJ
CO(g)+1/2O2(g)→CO2(g), ΔH = -282.7 kJ

Solutions

Expert Solution

Desired reaction is

Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g)

Given reactions

Reaction -1 : 2Fe(s)+3/2O2(g)→Fe2O3(s), ΔH = -824.2 kJ
Reaction 2 :   CO(g)+1/2O2(g)→CO2(g), ΔH = -282.7 kJ

We use Hess’s law

Lets reverse reaction first

Fe2O3(s) → 2Fe(s)+3/2O2(g) ΔH = 824.2 kJ (sing is changed while reversing)


Multiply reaction by 3

3 CO(g)+3/2O2(g)→3 CO2(g), ΔH = 3x (-282.7 kJ)    

Lets add these two reactions

Fe2O3(s) → 2Fe(s)+3/2O2(g) ΔH = 824.2 kJ

3 CO(g)+3/2O2(g)→3 CO2(g), ΔH = 3x (-282.7 kJ)    

------------------------------------------------------------------  

Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g)    DeltH = 824.2 + ( 3* - 282.7 kJ )

                                                                            = -23.9 kJ

(Delta H of reactions added when reactions are added)

Answer : Delta Hrxn = -23.9 kJ

queen_honey_blossom answered 2 years ago
Next > < Previous

Related Solutions

Calculate ΔHrxn for the following reaction: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) Use the following reactions and given ΔH′s. 2Fe(s)+3/2O2(g)→Fe2O3(s), ΔH...
Calculate ΔHrxn for the following reaction: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) Use the following reactions and given ΔH′s. 2Fe(s)+3/2O2(g)→Fe2O3(s), ΔH = -824.2 kJ CO(g)+1/2O2(g)→CO2(g), ΔH = -282.7 kJ
Calculate ΔHrxn for the following reaction: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) Use the following reactions and given ΔH′s. 2Fe(s)+3/2O2(g)→Fe2O3(s), ΔH...
Calculate ΔHrxn for the following reaction: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) Use the following reactions and given ΔH′s. 2Fe(s)+3/2O2(g)→Fe2O3(s), ΔH = -824.2 kJ CO(g)+1/2O2(g)→CO2(g), ΔH = -282.7 kJ
The following reaction is used to obtain iron from iron ore: Fe2O3(s)+3CO(g) ? 2Fe(s)+3CO2(g) The reaction...
The following reaction is used to obtain iron from iron ore: Fe2O3(s)+3CO(g) ? 2Fe(s)+3CO2(g) The reaction of 172 g of Fe2O3 with 84.2 g of CO produces 71.8 g of Fe. Calculate the theoretical yield of solid iron. Express the mass in grams to three significant figures.
Calculate ΔHrxn for the following reaction: CaO(s)+CO2(g)→CaCO3(s) Use the following reactions and given ΔH′s. Ca(s)+CO2(g)+12O2(g)→CaCO3(s), ΔH=...
Calculate ΔHrxn for the following reaction: CaO(s)+CO2(g)→CaCO3(s) Use the following reactions and given ΔH′s. Ca(s)+CO2(g)+12O2(g)→CaCO3(s), ΔH= -812.8 kJ 2Ca(s)+O2(g)→2CaO(s), ΔH= -1269.8 kJ Express your answer using four significant figures. Please help I keep getting all the wrong answers.
1) Calculate the enthalpy of reaction (ΔHrxn) for the following reaction: Fe2O3(s) + 3 CO(g) →...
1) Calculate the enthalpy of reaction (ΔHrxn) for the following reaction: Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g) Given: 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) ΔH = –1648 kJ 2 CO2(g) → 2 CO(g) + O2(g) ΔH = +565.4 kJ 2) Use standard enthalpies of formation to calculate the standard enthalpy of reaction for the following reaction: 2 H2S(g) + 3 O2(g) → 2 H2O(l) + 2 SO2(g) ΔH∘rxn
Iron(III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains...
Iron(III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains 22.25 g Fe2O3and 14.18 g CO. Once the reaction has occurred as completely as possible, what mass (in g) of the excess reactant is left?
Iron(III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains...
Iron(III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains 23.00 g Fe2O3 and 16.00 g CO. Once the reaction has occurred as completely as possible, what mass (in g) of the excess reactant is left?
(Sig Figs) Iron(III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture...
(Sig Figs) Iron(III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains 22.20 g Fe2O3 and 14.00 g CO. The online website said the answer is m = 2.32g ( 3 sig figs) While my answer was 2.318 ( 4 sig figs) Heres my calculations 22.20 g Fe2O3 / 159.69 = 0.13901934999060680067631035130565 mols of Fe2O3 14.00 g CO / 28.01 = 0.49982149232416993930739021777936 mols of  CO 0.13901934999060680067631035130565 x 3 = 0.41705804997182040202893105391696 mols of Fe2O3 needed to...
Iron(III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains...
Iron(III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains 22.90 g Fe2O3 and 15.78 g CO. Once the reaction has occurred as completely as possible, what mass (in g) of the excess reactant is left?
Iron(III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains...
Iron(III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains 22.10 g Fe2O3 and 14.00 g CO. Once the reaction has occurred as completely as possible, what mass (in g) of the excess reactant remains? Express your answer to three significant figures. Suppose that in an alternate universe, the possible values of l were the integer values from 0 to n(instead of 0 to n−1). Assuming no other differences from this universe, how many...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT