For the reaction
`2Cl(g) rarr Cl_(2)(g)`, what are the signs of `DeltaH` and `DeltaS`?

Answer

`DeltaH` is negative (bond energy is released ) and `DeltaS` is negative (There is less randomness among the molecules than among the atoms )

Explanation

`DeltaH and DeltaS` are negative
The given reaction represents the formation of chlorine molecule from chlorine atoms.
Here, bond formation is taking place. Therefore, energy is being released. Hence , `DeltaH` is negative.
Also, two moles of atoms have more randomness than one mole of a molecule. Since spontaneity is decreased , `DeltaS` is negative for the given reaction.