For an explosion in an open vessel,one would expect
A)ΔH to be positive and ΔE to be less than ΔH.
B)ΔH to be positive and ΔE to be greater than ΔH.
C)ΔH to be negative and ΔE to be less than ΔH.
D)ΔH to be negative and ΔE to be greater than ΔH.

Question

Quizplus · Accepted Answer

In an explosion in an open vessel, there is a sudden release of energy in the form of heat and work done by the expanding gases. This causes the internal energy of the system to decrease (i.e. ΔH is negative) and the amount of energy released as heat is greater than the work done (i.e. ΔE is less than ΔH). Therefore, option C is the best choice.

For an Explosion in an Open Vessel,one Would Expect