Equilibrium and Kinetics
At this point of advancements in science, chemists have a good understanding of the kinetics of reactions. They can predict the effects of changes in pH, temperature, and concentration in chemical reactions.
In a cylinder, there is a reaction mixture of hydrogen and iodine. The hydrogen and the iodine react to form hydrogen iodide.
The industrial production of ammonia is done by a process called Haber process. The reaction occurs as shown below, and is usually done in the presence of an iron catalyst.
ΔH = –92kJ
If the reverse reaction of Reaction 1 is endothermic, what is the sign of DH of the reaction in which HI is on the product side?
|C||Neither positive nor negative, because the reaction is reversible|
|D|| Cannot be predicted, because more data is required regarding the individual enthalpy values|