Answer
(i).
(a) increase.
(b) $H_{Products}\gt H_{Reactants}$
(c) $\Delta$H is positive.
(ii)
(a) decrease.
(b) $H_{Reactants}\gt H_{Products}$
(c) $\Delta$H is negative.
Work Step by Step
Heat is absorbed in endothermic reactions and it is released in exothermic reactions. The above answers are based on this fact.
