The following reactions are stages in important industrial processes
(i) \(\mathrm{N}_{2(9)}+\mathrm{O}_{2}-2 \mathrm{NH}_{3(9)} \Delta \mathrm{H}\) is negative
(ii) \(2 \mathrm{SO}_{2(g)}+\mathrm{O}_{2(g)}-2 \mathrm{SO}_{3(g)} \Delta \mathrm{H}\) is negative
(iii) \(\mathrm{N}_{2(g)}+\mathrm{O}_{3(9)}-2 \mathrm{NO}_{(9)} \Delta \mathrm{H}\) is positive.
Which of the above forward reactions is favoured by a decrease in the concentration of the pressure and an increase in temperature?