$$\Delta $$So positive means entropy of products is more
than that of reactants. Among the given reactions
only in option (a) the $$\Delta $$So is positive cause products
has 1 mole of gaseous products CO while reaction
have half mole of gaseous O2 and Carbon (C) in
solid state. Thus, reactions have less randomness
than products. Also, the reaction is a combustion
reaction which has a negative value of $$\Delta $$H.
According to Gibbs energy change ($$\Delta $$So).
$$\Delta $$Go = $$\Delta $$Ho - T$$\Delta $$So
$$ \Rightarrow $$ $$\Delta $$Go = -ve - T(+ve)
Thus, on increasing temperature value of $$\Delta $$Go
Questions Asked from Thermodynamics
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