Given the enthalpies of reaction: 2P(g) + 3Cl2(g) → 2PCl3(g) DH = –574 kJ 2P(g) +...

Given the enthalpies of reaction: 2P(g) + 3Cl2(g) → 2PCl3(g) DH = –574 kJ 2P(g) + 5Cl2(g) → 2PCl5(g) DH = –887 kJ What is the enthalpy change of the following reaction: PCl3(g) + Cl2(g) → PCl5(g)

Question 5 options:
1461 kJ
–1461 kJ
222 kJ
–313 kJ
–156 kJ

Expert Solution

2P(g) + 3Cl2(g) → 2PCl3(g) DH = –574 kJ

2P(g) + 5Cl2(g) → 2PCl5(g) DH = –887 kJ

(-) (-) (-) (+)

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

2PCl5(g) -----------> 2PCl3(g) + 2Cl2(g) DH = 313KJ

PCl5(g) -----------> PCl3(g) + Cl2(g) DH = 313/2 = 156.5KJ

PCl3(g) + Cl2(g) ---------------> PCl5(g) DH = -156.5KJ >>>>>answer

–156 kJ >>>>answer

queen_honey_blossom answered 2 years ago

Part A. Calculate the enthalpy of the reaction 2NO(g)+O2(g)?2NO2(g) given the following reactions and enthalpies of...

Part A. Calculate the enthalpy of the reaction 2NO(g)+O2(g)?2NO2(g) given the following reactions and enthalpies of formation: 12N2(g)+O2(g)?NO2(g), ?H?A=33.2 kJ 12N2(g)+12O2(g)?NO(g), ?H?B=90.2 kJ Part B. Calculate the enthalpy of the reaction 4B(s)+3O2(g)?2B2O3(s) given the following pertinent information: B2O3(s)+3H2O(g)?3O2(g)+B2H6(g), ?H?A=+2035 kJ 2B(s)+3H2(g)?B2H6(g), ?H?B=+36 kJ H2(g)+12O2(g)?H2O(l), ?H?C=?285 kJ H2O(l)?H2O(g), ?H?D=+44 kJ

Part A Calculate the enthalpy of the reaction 2NO(g)+O2(g)→2NO2(g) given the following reactions and enthalpies of...

Part A Calculate the enthalpy of the reaction 2NO(g)+O2(g)→2NO2(g) given the following reactions and enthalpies of formation: 12N2(g)+O2(g)→NO2(g), ΔfH∘A=33.2 kJ mol−1 12N2(g)+12O2(g)→NO(g), ΔfH∘B=90.2 kJ mol−1 Express your answer with the appropriate units. Part B Calculate the enthalpy of the reaction 4B(s)+3O2(g)→2B2O3(s) given the following pertinent information: B2O3(s)+3H2O(g)→3O2(g)+B2H6(g), ΔrH∘A=+2035 kJ mol−1 2B(s)+3H2(g)→B2H6(g), ΔrH∘B=+36 kJ mol−1 H2(g)+12O2(g)→H2O(l), ΔrH∘C=−285 kJ mol−1 H2O(l)→H2O(g), ΔrH∘D=+44 kJ mol−1 Express your answer with the appropriate units.

Given the provided enthalpies of formation, calculate ΔH for the reaction shown. 2 H2 (g) +...

Given the provided enthalpies of formation, calculate ΔH for the reaction shown. 2 H2 (g) + O2 (g) → 2 H2O (g) ΔH = -483.6 kJ 3 O2 (g) → 2 O3 (g) ΔH = +285.4 kJ 6 H2 (g) + 2 O3 (g) → 6 H2O (g) ΔH = ?

Calculate the enthalpy of the reaction 2NO(g)+O2(g)→2NO2(g) given the following reactions and enthalpies of formation: 12N2(g)+O2(g)→NO2(g),...

Calculate the enthalpy of the reaction 2NO(g)+O2(g)→2NO2(g) given the following reactions and enthalpies of formation: 12N2(g)+O2(g)→NO2(g), ΔH∘A=33.2 kJ 12N2(g)+12O2(g)→NO(g), ΔH∘B=90.2 kJ

1) determine the heat of reaction from the bond enthalpies for the reaction given H2 + ...

1) determine the heat of reaction from the bond enthalpies for the reaction given H2 + Br2 >> 2 HBr 436.4 192.5 366.1 2) calculate the formal charges in the phosphate ion. 3) what elements can have "expanded octets" and how many electrons can they carry?

Calculate the enthalpy of the reaction 2NO(g)+O2(g)?2NO2(g) given the following reactions and enthalpies of formation: 12N2(g)+O2(g)?NO2(g), ?H?A=33.2...

Calculate the enthalpy of the reaction 2NO(g)+O2(g)?2NO2(g) given the following reactions and enthalpies of formation: 12N2(g)+O2(g)?NO2(g), ?H?A=33.2 kJ 12N2(g)+12O2(g)?NO(g), ?H?B=90.2 kJ Express your answer with the appropriate units. ?H? = Part B Calculate the enthalpy of the reaction 4B(s)+3O2(g)?2B2O3(s) given the following pertinent information: B2O3(s)+3H2O(g)?3O2(g)+B2H6(g), ?H?A=+2035 kJ 2B(s)+3H2(g)?B2H6(g), ?H?B=+36 kJ H2(g)+12O2(g)?H2O(l), ?H?C=?285 kJ H2O(l)?H2O(g), ?H?D=+44 kJ Express your answer with the appropriate units. ?H? =

Consider the following reaction: PCl5 (g)⇄ PCl3 (g) + Cl2 (g) ΔH = 87.9 kJ/reaction For...

Consider the following reaction: PCl5 (g)⇄ PCl3 (g) + Cl2 (g) ΔH = 87.9 kJ/reaction For each of the following changes, indicate whether the reaction will proceed towards products, towards reactants, or have no net reaction to reestablish equilibrium. a. ___________ Temperature is increased b. ___________ The pressure is increased by decreasing the volume. c. ___________ The pressure is decreased by removing some PCl 5 (g) d. ___________ The pressure is increased by adding N2(g) e. ___________ Cl2(g) is removed...

2C4H9OH + 8 O2 → 8 CO + 10 H2O DH = -2710 kJ If you have 5.77 g of...

2C4H9OH + 8 O2 → 8 CO + 10 H2O DH = -2710 kJ If you have 5.77 g of the organic fuel (MW = 74.12 g/mol) and 10.77 g of oxygen gas, how many grams of carbon monoxide will you produce? A) Write the reaction B) put a square around the compound that will be the precipitate C) how many moles of each reactant do you have? D) How many grams of the precipitate did you create Extra Credit: How many moles of excess...

2Al(s)+3Cl2(g)→2AlCl3(s) Given the above reaction, if you have 10.0 grams of Aluminum and Chlorine gas, what...

2Al(s)+3Cl2(g)→2AlCl3(s) Given the above reaction, if you have 10.0 grams of Aluminum and Chlorine gas, what is the theoretical yield of AlCl3 for the reaction?

What is ΔGrxno (in kJ) at 647 K for the following reaction? PbO(g) + CO2(g) →...

What is ΔGrxno (in kJ) at 647 K for the following reaction? PbO(g) + CO2(g) → PbCO3(s) PbO: ΔHfo = -219.0 kJ/mol and So = 66.5 J/K mol) PbCO3(s): ΔHfo = -699.1 kJ/mol and So = 131.0 J/K mol) CO2: ΔHfo = -393.5 kJ/mol and So = 213.6 J/K mol)

Question