Chemical Thermodynamics Question 436
Question: For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, $ \Delta U $ and w correspond to [AIIMS 2005]
Options:
A) $ \Delta U<0,\ w=0 $
B) $ \Delta U=0,\ w<0 $
C) $ \Delta U>0,\ w=0 $
D) $ \Delta U<0,\ w>0 $
Show Answer
Answer:
Correct Answer: A
Solution:
Bomb calorimeter is commonly used to find the heat of combustion of organic substances which consists of a sealed combustion chamber, called a bomb. If a process is run in a sealed container then no expansion or compression is allowed, so w = 0 and ∆U = q. ∆U < 0, w = 0
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