The decomposition vapor pressure of NH4Cl at 421°C was 618 kPa and increased to 1215 kPa at 459°C. NH4Cl(k) NH3(g) + HCl(g) (a) the equilibrium constant, (b) the standard reaction Gibbs energy, (c) standard enthalpy, (d) Calculate the standard decomposition entropy, all at 421°C. Note that steam behaves like an ideal gas and that ΔH° and ΔS° are independent of temperature in the given range. Assume it is.

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