entropy change that accompanies a reaction in the molar quantities expresses in a chemical reaction, under standard condition and with all products and reactants in their standard states
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What is a spontaneous reaction?
process that occurs without a continuous supply of energy
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How can an endothermic reaction be spontaneous?
if entropy increases, it acts as the driving force of the reaction
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What is free energy?
the balance between entropy and enthalpy, determines the feasibility of reactions
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What does the tendency of a process to take place depend on?
temperature, entropy change of system and the enthalpy change
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When is a reaction spontaneous?
G < O/ -G means energy left over
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What is the equation to find dG?
= dH - TdS
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some reactions are still not feasible when G < 0, why is this?
so slow that reaction effectively does not happen/ activation energy too high
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How does entropy change when a solid lattice dissolves?
increases due to more disorder/ exothermic solution, makes G negative/ endothermic depends on -TAS so temp has impact
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