Chemical Thermodynamics Question 223
Question: In which of the following reactions does the heat change represent the heat of formation of water [EAMCET 1991]
Options:
A) $ 2H_2(g)+O_2(g)\to 2H_2O(l);,\Delta H=-116,kcal $
B) $ H_2(g)+\frac{1}{2}O_2(g)\to H_2O(l);,\Delta H=-58,kcal $
C) $ {{H}^{+}}(aq.)+O{{H}^{-}}(aq.)\to 2H_2O(l);,\Delta H=-13.7,kcal $
D) $ C_2H_2(g)+2\frac{1}{2}O_2(g)\to 2CO_2(g)+H_2O(l) $ ; $ \Delta H=-310,kcal $
Show Answer
Answer:
Correct Answer: B
Solution:
Heat of formation is the formation of one mole of the substance from its elements.
