P-Block Elements Ques 495
Question: The most efficient agent for the absorption of $ SO_3 $ is
[BHU 2004; DPMT 2004]
Options:
A) $ 80%\ H_2SO_4 $
B) $ 98%\ H_2SO_4 $
C) $ 50%\ H_2SO_4 $
D) $ 20%\ H_2S_2O_7 $
Show Answer
Answer:
Correct Answer: B
Solution:
98% $ H_2SO_4 $ is used for absorbing dense fog of acid which is formed by dissolving $ SO_3 $ in water. Hence 98% $ H_2SO_4 $ is the most efficient agent for the absorption of $ SO_3 $ .
