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Question
Calculate DrG for the combustion of benzene at 325 K.
2 C6H6(
) + 15 O2(g) 12 CO2(g) + 6 H2O()
Species DfH (kJ/mol) S (J/Kmol)
C6H6() 49.0 173.3
O2(g) 0 205.1
CO2(g) -393.5 213.7
H2O() -285.8 67.0
A.-6386 kJ/mol-rxn
B.-6078 kJ/mol-rxn
C.-7251 kJ/mol-rxn
D.-8611 kJ/mol-rxn
E.+1431 kJ/mol-rxn
Answer
This answer is hidden. It contains 2 characters.
Related questions
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Hydrogen peroxide decomposes into water and oxygen in a first-order process.
H2O2(aq) H2O() + 1/2 O2(g)
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Aqueous colloidal solutions can be classified as ________ (water-fearing), or hydrophilic (water-loving).
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A(n) ____ is a colloidal dispersion of a solid in a liquid.
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At 25 C, what is the osmotic pressure of a homogeneous solution consisting of 21.0 g urea (CON2H4) diluted with water to 2.50 L? (R = 0.08206 Latm/molK)
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Q:
Assuming ideal behavior, which of the following aqueous solutions should have the highest boiling point?
A.1.00 m LiBr
B.0.75 m K2SO4
C.0.50 m Ca(NO3)2
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Q:
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Q:
Which of the following statements concerning solubility is/are CORRECT?
1/ Ionic compounds composed of Group 1A metal ions and halide ions, such as NaCl, are insoluble in nonpolar solvents.
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What is the definition of molality?
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Q:
Lithium chloride crystallizes in a face-centered cubic unit cell with chloride ions occupying the lattice points and lithium ions occupying octahedral holes. How many chloride ions surround each lithium ion in LiCl?
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Q:
What is the distance, in atomic radii, along any edge of a body-centered unit cell?
A.
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C.4 r
D.
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Q:
If a metal crystallizes in a primitive cubic lattice, each metal atom has ____ "nearest neighbors."
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If a metal crystallizes in a face-centered cubic lattice, each metal atom has ____ "nearest neighbors."
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Q:
Arrange the three common unit cells in order from least dense to most dense packing.
A.face-centered cubic < body-centered cubic < primitive cubic
B.primitive cubic < body-centered cubic < face-centered cubic
C.primitive cubic < face-centered cubic < body-centered cubic
D.body-centered cubic < primitive cubic < face-centered cubic
E.body-centered cubic < face-centered cubic < primitive cubic
Q:
Which equation represents the number of atoms in a body-centered cubic unit cell?
A.
B.
C.
D.
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Q:
The solubility product equilibrium constant, Ksp, of silver bromide is 5.4 10-13 at 298 K.
AgBr(s) Ag+(aq) + Br-(aq)
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C.5.87 kJ/mol
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Q:
What is the equilibrium constant for reaction below at 25 C? (R = 8.314 J/Kmol)2 NO(g) + O2(g) 2 NO2(g)given DfG [NO(g)] = +86.6 kJ/mol and DfG [NO2(g)] = +51.2 kJ/mol.A.3.9 10-13B.1.0C.2.6 1012D.1.6 106E.3.8 1028
Q:
All of the following relationships are true EXCEPT
A..
B..
C..
D..
E..
Q:
If a chemical reaction is exothermic, but not spontaneous, which of the following must be true?
A.DrG > 0, DrS > 0 and DrH > 0
B.DrG < 0, DrS > 0 and DrH > 0
C.DrG > 0, DrS < 0 and DrH > 0
D.DrG < 0, DrS < 0 and DrH < 0
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Q:
For which of the following reactions will the entropy of the system decrease?A.2 NH3(g) N2(g) + 3 H2(g)B.2 C(s) + O2(g) 2 CO(g)C.CaCO3(s) CaO(s) + CO2(g)D.2 NO2(g) N2O4(g)E.NaOH(s) Na+(aq) + OH-(aq)