The following two reactions occur in sequence at : Reaction 1: Reaction 2: Determine…

CHEMISTRY · Subjective · A Level · Chemistry · Thermodynamics · Thermodynamics

Problem

The following two reactions occur in sequence at

298\,\text{K}

: Reaction 1:

A + B \rightarrow C

\Delta G^\circ = +18\,\text{kJ}\,\text{mol}^{-1}

Reaction 2:

C \rightarrow D + E

\Delta G^\circ = -40\,\text{kJ}\,\text{mol}^{-1}

Determine the value of

\Delta G^\circ

for the overall reaction

A + B \rightarrow D + E

and state whether the overall process is spontaneous under standard conditions.