What does it mean when two (or more) compounds have a net negative (exothermic) energy of...

What does it mean when two (or more) compounds have a net negative (exothermic) energy of mixing?

Expert Solution

∆H is negative means the reaction is favourable energetically.

According to Gibbs equation ∆G= ∆H-T∆S

For ideal solutions , because the particles are considered to be far away from each other that there occurs no interaction between them . In those cases enthalpy of mixing is zero ad there doesn't exist any interaction .

But in case of non ideal solutions (with which we actually deal) this enthalpy of mixing can be positive or negative.

In case when it is negative and entropy of mixing we know is positive , both makes the free energy more negative ie they favour the mixing of two or more compounds.

queen_honey_blossom answered 2 years ago

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