why do chemical reactions take place

reactions that are spontaneous involve

mixing and spreading out

entropy

randomness of a system

why does a mixture have a high entropy

Because the particles can be arranged in a lot of different ways

will entropy S be + or - when products are more disordered than reactants

+

why do entropies increase with temperature

because particles spread out and are more disordered

factors that govern feasibility of a reaction

• enthalpy change

• entropy chnage

what happens if G is positive

reaction is not feasible (not occur)

formula for gibbs free energy

G= H-T(S)

what unit is temperature measured in

Kelvin

Formula for calculating entropy of a system

Products-reactants

How to convert JK-1mol-1 to kJK-1mol-1

Divide by 1000

graphite is said to be

kinetically stable