The Temperature Dependence of K (18.4.2)

Question 1

• For an exothermic reaction, Keq decreases as temperature increases. For an endothermic reaction, Keq increases as temperature increases.

Answer 1

• For an exothermic reaction, Keq decreases as temperature increases. For an endothermic reaction, Keq increases as temperature increases.

Question 2

• The van’t Hoff equation, ln(K2/K1)= (ñ∆H°/R)ï(1/T2 - 1/T1), tells how Keq changes as temperature changes.

Answer 2

• The van’t Hoff equation, ln(K2/K1)= (ñ∆H°/R)ï(1/T2 - 1/T1), tells how Keq changes as temperature changes.