Chemical Thermodynamics Question 253

Question: $ S+\frac{3}{2}O_2\to SO_3+2x,kcal $

$ SO_2+\frac{1}{2}O_2\to SO_3+y,kcal $ Find out the heat of formation of $ SO_2 $ [AIIMS 1997; CBSE PMT 1999; KCET 1999]

Options:

A) $ 2x-y $

B) $ 2x+y $

C) $ x+y $

D) $ 2x/y $

Show Answer

Answer:

Correct Answer: A

Solution:

Subtract equation (ii) from (i).



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