Chemical Thermodynamics Question 363
Question: Substance $ A_2B(g) $ can undergoes decomposition to form two set of products: If the molar ratio of $ A_2(g) $ to A (g) is 5 : 3 in a set of product gases, then the energy involved in the decomposition of 1 mole of $ A_2B(g) $ is:
Options:
A) $ 48.75kJ/mol $
B) $ 43.73kJ/mol $
C) $ 46.25kJ/mol $
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
- $ {\Delta_{r}}H=\frac{5}{8}\times 40+\frac{3}{8}\times 50=43.75kJ/mol $
