The chemical reaction that causes iron to corrode in air is given by 4Fe(s)+3O2(g)â2Fe2O3(s)
and
ÎrHâ = â1684 kJ molâ1
ÎrSâ = â543.7 J Kâ1 molâ1
a) What is the standard Gibbs energy change for this reaction? Assume the commonly used standard reference temperature of 298 K.
b) What is the Gibbs energy for this reaction at 3652 K ? Assume that ÎrHâ and ÎrSâ do not change with temperature.
c) The standard Gibbs energy change, ÎrGâ, applies only when the reactants and products are in their standard states. Assume that the above corrosion reaction is carried out in a flask where the reactants and products are in their standard states and the values of ÎrHâ and ÎrSâ do not change with temperature.
At what temperature, Teq, do the forward and reverse corrosion reactions occur in equilibrium?
The chemical reaction that causes iron to corrode in air is given by 4Fe(s)+3O2(g)â2Fe2O3(s)
and
ÎrHâ = â1684 kJ molâ1
ÎrSâ = â543.7 J Kâ1 molâ1
a) What is the standard Gibbs energy change for this reaction? Assume the commonly used standard reference temperature of 298 K.
b) What is the Gibbs energy for this reaction at 3652 K ? Assume that ÎrHâ and ÎrSâ do not change with temperature.
c) The standard Gibbs energy change, ÎrGâ, applies only when the reactants and products are in their standard states. Assume that the above corrosion reaction is carried out in a flask where the reactants and products are in their standard states and the values of ÎrHâ and ÎrSâ do not change with temperature.
At what temperature, Teq, do the forward and reverse corrosion reactions occur in equilibrium?