Chemical Thermodynamics Question 374
Question: The species which by definition has zero standard molar enthalpy of formation at $ 298K $ is
Options:
A) $ Br_2(g) $
B) $ Cl_2(g) $
C) $ H_2O( g ) $
D) $ CH_4(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, $ Cl_2 $ is gas while $ Br{ _2} $ is liquid.
