Question

H2O 4 liquid is changed to 2x O2 gas delta u is equal to 2.1 kilo calorie deltas 20 calorie Kelvin at 300 Kelvin delta g is

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Answer 1

Answer:

The change in Gibbs Free energy is given by

ΔH=ΔU+Δn

g

RT

where

ΔH is the enthalpy of the reaction

ΔS is the entropy of the reaction

and ΔU is the change in internal energy

Δn

g

is the (number of gaseous moles in product) - (number of gaseous moles in reactant)=2-0=2

R is the gas constant =2 cal

But,

ΔH=(2.1×10

3

)+(2×2×300)=3300cal

Hence,

ΔG=ΔH=TΔS

ΔG=3300−(300×20)

ΔG=−2700cal=−2.7cal