Pad 9:04 PM 51%-1, digital.wwnorton.com NikeStore iPad - Apple Carbon Disulfide

Question

Pad 9:04 PM 51%-1, digital.wwnorton.com NikeStore iPad - Apple Carbon Disulfide Is... Smartwork5 Chemistry question.. 14 out of 20 GR. 10/29/17 bmo103@humboldt.edu SCORE This is a Numeric Entry question/It is worth 4 points/You have 1 of 4 attempts remaining/ There is no attempt penalty 03 Question 4points) Carbon disulfide is a foul-smelling solvent that dissolves sulfur and other nonpolar substances. It can be made by heating sulfur in an atmosphere of methane. For the reaction (below), Hrxn-7604 kJ and ASrxno-121 9.1 J/K. See page 860 4CH4(g)+S4CS2 (g +8H2(8 3rd attempt Part 1 (2 pts) Feedback See Periodic Table Calculate the equilibrium constant at 250.0°C. 5,28 Part 2 (2 pts) Feedback See Hint Calculate the equilibrium constant at 500.0°C. 2.01 0310 > TRY

Explanation / Answer

deltaH = 760.4 KJ

deltaS = 1219.1 J/K

= 1.2191 KJ/K

T= 250.0 oC

= (250.0+273) K

= 523 K

we have below equation to be used:

deltaG = deltaH - T*deltaS

deltaG = 760.4 - 523.0 * 1.2191

deltaG = 122.8107 KJ/mol

deltaG = 122810.7 J/mol

we have below equation to be used:

deltaG = -R*T*ln Kc

122810.7 = - 8.314*523.0* ln(Kc)

ln Kc = -28.2439

Kc = 5.42*10^-13

Answer: 5.42*10^-13

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