What is the value for Δ G at 273K in cal/mol? (Be careful to only use 3 Sig Figs in your calculations) j) Convert 273K to ∘ C. Would you expect ice to melt at this temperature? k) A Δ G of 0 indicates a system is at equilibrium. Use this to explain which process is spontaneous at 273K, melting or freezing?
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Hi,
Help with i-k part.
The process of melting solid ice to produce water has the following
a) What is the value for Δ G at 263K in cal/mol?
b) Is melting ice spontaneous at 263K?
c) What about the reverse reaction? Would liquid water spontaneously freeze at 263K?
d) Convert 263K to ∘ C. Would you expect ice to melt at this temperature?
e) What is the value for Δ G at 283K in cal/mol?
f) Is melting ice spontaneous at 283K?
g) What about the reverse reaction? Would liquid water spontaneously freeze at 283K?
h) Convert 283K to ∘ C. Would you expect ice to melt at this temperature?
i) What is the value for Δ G at 273K in cal/mol? (Be careful to only use 3 Sig Figs in your calculations)
j) Convert 273K to ∘ C. Would you expect ice to melt at this temperature?
k) A Δ G of 0 indicates a system is at equilibrium. Use this to explain which process is spontaneous at 273K, melting or freezing?
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