A chemist wants to convert substance M to substance O in a single overall process…

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

Problem

A chemist wants to convert substance M to substance O in a single overall process whose standard free-energy change lies between

-10

and

-20\,\text{kJ mol}^{-1}

. She has access to the following reactions (all

\Delta G^\circ

values are in kJ mol

^{-1}

): (a) Reactions (1) and (4) (b) Reactions (3) and (4) (c) Reactions (1) and (2) (d) Reactions (2) and (5)