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In: Chemistry

The chemical equation for the reaction between methane and elemental chlorine is: CH4(g) + 2 Cl2(g)...

The chemical equation for the reaction between methane and elemental chlorine is:

CH4(g) + 2 Cl2(g) → CCl4(g) + 4 HCl(g)

Use the provided values for enthalpies of formation and entropies of the reactants and the products to calculate the standard enthalpy, the entropy and the free Gibbs energy changes associated with the reaction (ΔrHo, ΔrSo, ΔrGo) and tell which one of the statements below describes the reaction correctly

Substance ΔrHo(kJ/mol) So(J/molK)
CH4(g) -74.9 186.2
Cl2(g) 0 223.0
CCl4(g) -95.98 309.7
HCl(g) -92.30

186.9

  • A. The entropy of the system decreases as the result of the chemical reaction.
  • B. The reaction is endothermic.
  • C. The reaction is reactant-favored under standard conditions at 25oC.
  • D. The reaction is spontaneous under standard conditions at 25oC.

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