Chemical Thermodynamics Question 374

Question: The species which by definition has zero standard molar enthalpy of formation at 298K is

Options:

A) Br2(g)

B) Cl2(g)

C) H2O(g)

D) CH4(g)

Show Answer

Answer:

Correct Answer: B

Solution:

  • The species in its elemental form has zero standard molar enthalpy of formation at 298 K. At 298K, Cl2 is gas while Br2 is liquid.


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