Chemical Thermodynamics Question 276
Question: The enthalpy of combustion of $ C_6{H_{6(l)}} $ is - 3250 kJ. When 0.39 g of benzene is burnt excess of oxygen in an open vessel, the amount of heat evolved is [KCET 2000; AFMC 2000; DCE 2000]
Options:
A) 16.25 J
B) 16.25 kJ
C) 32.5 J
D) 32.5 kJ
Show Answer
Answer:
Correct Answer: B
Solution:
Heat evolved during combustion of 0.39g $ C_6H_6=\frac{3250\times 0.39}{78}=16.25,kJ. $
