At , a reaction has and . Using , what is the value of the equilibrium constant at…

CHEMISTRY · Single correct · A Level · Chemistry · Thermodynamics · Thermodynamics

Problem

298\,\text{K}

, a reaction has

\Delta H^\circ = -125\,\text{kJ mol}^{-1}

and

\Delta S^\circ = -250\,\text{J mol}^{-1}\,\text{K}^{-1}

. Using

R = 8.314\,\text{J mol}^{-1}\,\text{K}^{-1}

, what is the value of the equilibrium constant

K

298\,\text{K}

? (a)

\approx 6\times10^{-9}

(b)

\approx 7\times10^{8}

(c)

\approx 2.5\times10^{20}

(d)

\approx 9\times10^{34}