Answer to Question #169606 in Physical Chemistry for Ulysses

Question

If In K for a reaction, where K is the equilibrium constant, is plotted against the absolute temperature T, then

d(InK)/dt = - ΔH o /RT2

where ΔHo = -1119.7 kJ/mol. What is the gradient of the graph of In k against T at 25oC?

Answer 1

In thermodynamics, a closed system can exchange energy (as heat or work) but not matter, with its surroundings. An isolated system cannot exchange any heat, work, or matter with the surroundings, while an open system can exchange energy and matter.