Represent the potential energy/enthalpy change in the following processes graphically.
(a) Throwing a stone from the ground to roof.
(b)

\frac{1}{2}H_{2}(g)+\frac{1}{2}Cl_{2}(g)\rightleftharpoons HCl (g) \; \Delta _{r}H^{\ominus }=-92.32\; kJ\; mol^{-1}

In which of the processes potential energy/enthalpy change is contributing factor to the spontaneity?

Answers (1)

(a) Throwing a stone from ground to roof

b)  the reaction involved is a process where the energy decreases after the reaction. It can be represented as:

In process b), potential energy/enthalpy change is contributing factor to the spontaneity.

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