[408]

We can easily get TNT to make water, carbon dioxide, and nitrogen by lighting a fuse. 
 

If by fuse you mean fuse with a detonator, then yes

[tamim83]

If by fuse you mean fuse with a detonator, then yes

Yep 

[vmelkon]

TNT is a rather complex molecule. Why not use a simple example like N2 + 3H2 <=> 2NH3
or H2 + Cl2 <=> 2HCl

[AMEDIO]

All irreversible (spontaneous) reactions happen because of entropy.

its not necessary that an irreversible reaction will be spontaneous always...

[rabolisk]

All irreversible (spontaneous) reactions happen because of entropy.

its not necessary that an irreversible reaction will be spontaneous always...

Such as?

[AMEDIO]

nstance, the decomposition of carbonic acid (H2CO3) into water and carbon dioxide (H2O and CO2) is spontaneous. However, it can be reversed by an enzyme called carbonic anhydrase; it just takes energy.

[rabolisk]

Enzymes don't change the energetics of the reaction. They only affect the kinetics. Carbonic anhydrase doesn't "reverse" the reaction; the reaction itself is always reversible. The position of the equilibrium is unaffected. The role of carbonic anhydrase is to bring the reaction to an equilibrium rapidly.

[Jorriss]

He didn't word it this way but I think he means the entropy of a closed system can decrease if heat is added.

[rabolisk]

He didn't word it this way but I think he means the entropy of a closed system can decrease if heat is added.

The entropy of a closed system would increase if heat is added, actually. Regardless, the entropy of the universe cannot decrease. When  :delta: S is negative for a reaction, only the entropy of the system decreases; that of the universe cannot.

[Jorriss]

He didn't word it this way but I think he means the entropy of a closed system can decrease if heat is added.

The entropy of a closed system would increase if heat is added, actually. Regardless, the entropy of the universe cannot decrease. When  :delta: S is negative for a reaction, only the entropy of the system decreases; that of the universe cannot.

That's why I said system and not universe. And I take by the heat part and change to some reactions. There are endothermic combination reactions where heat increases the number of products but reduces the entropy. Granted, can't think of any off the top of my head.

[rabolisk]

An endothermic reaction in which entropy decreases would not be spontaneous.

[Jorriss]

An endothermic reaction in which entropy decreases would not be spontaneous.

Ya know, I've read of endothermic synthesis reactions but I was walking to Ralphs thinking, that doesn't make any sense though...I have to agree with you, I either read something wrong or I need to reread it.