Chemical Thermodynamics Question 285
Question: If $ C+O_2\to CO_2+94.2,kcal $
$ H_2+\frac{1}{2}O_2\to ,H_2O+68.3,kcal $
$ CH_4+2O_2,\to ,CO_2+2H_2O+210.8,kcal $ Then the possible heat of methane will be [UPSEAT 2001]
Options:
A) 47.3 kcal
B) 20.0 kcal
C) 45.9 kcal
D) - 47.3 kcal
Show Answer
Answer:
Correct Answer: B
Solution:
By 2 × (i) + (ii) - (iii) $ \Delta H $ of methane $ =20.0,kcal $ .
