chemistry help 4 Pcls (s) AH -435.2 kcal Based on the reaction shown, which stat

Question

chemistry help

4 Pcls (s) AH -435.2 kcal Based on the reaction shown, which statement is true? O The reaction is exothermic, O The reaction absobs heat. O The reaction increases in entropy. The reaction is endothermic. QUESTION 32 2 points s A reaction that is spontaneous can be described as o proceeding without external influence once it has begun. O Having the same rate in both the forward and reverse directions O proceeding in both the forward and reverse directions. O releasing heat to the surroundings. points save QUESTION 33 A solid sample at room temperature spontaneously sublimes, forming a gas This change in state is accempanied by which of the changes in the sample? o Entropy increases and heat (enthalpy) is absorbed Entropy decreases and heat (enthalpy) is released o Entropy increases and heat (enthalpy) is released and heat (enthalpy) is absorbed (t)

Explanation / Answer

Since delH is -ve, the reaction is exothermic

A reaction is said to be Spontaneous if it proceeds without external influence,

Sublimation leads to an increase in entropy and heat is absorbed during sublimation

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